After a four-day trial, a jury found the defendant, Richard A. Costello, guilty of unlawfully having intercourse with a child under sixteen years of age, in violation of G. L. c. 265, § 23. The defendant challenges the conviction on numerous grounds, none of which requires reversal.
The jury could have found the following facts. The parents of the complainant became friendly with the defendant, Costello, in the mid 1970’s, when the complainant, Claudia,2 was about seven years old. Claudia, her parents, and her sisters were then living in Canton. The events referred to in the indictment occurred seven years later when Claudia was fourteen years old.
At the beginning of the relationship between the defendant and Claudia’s parents, Costello visited the family on the weekends and one or two times during the week. In 1978 or 1979, Costello began to visit two or three times each week but only during the daytime when Claudia’s father was working, and he left before her father returned home. Claudia and her sisters had an “uncle-type relationship” with Costello at the time.
Subsequently, Claudia’s family moved to Walpole, and around October, 1984, her parents separated. Claudia went to live in Attleboro with her mother, her younger sister, and her brother, where she continued her close friendship with Costello. Her twin sister and older sister stayed in Walpole with their father.
The Attleboro house, which Costello eventually made his home, had three bedrooms upstairs, one bedroom downstairs, and a finished basement. The defendant did not have a room of his own but slept with Claudia’s mother or on the couch downstairs. The incidents that are the subject of the indictments began in October of 1984, a few weeks after Claudia’s mother moved to the Attleboro home, and continued through February of 1985. Costello eventually moved out of the Att-*691leboro house sometime in April of 1985. During the summer of 1985 Claudia’s mother and Costello resumed their relationship but only for a short time. Ultimately, Claudia’s parents reconciled their differences and moved back together.
In May of 1987, Costello instituted a paternity action, seeking custody or visitation rights to Claudia’s brother, who was born in November, 1981. Upon hearing that Costello wanted custody, Claudia told her mother of her sexual encounters with the defendant.
The sexual encounters. The indictment charges Costello with committing unlawful acts of sexual intercourse with and abuse of a child from on or about October 1, 1984, to about February 28, 1985. At trial, Claudia testified to four incidents during this period: October 9, 1984, November 24, 1984, December 1984, and the middle of or late February, 1985. The following is a summary of Claudia’s testimony about these incidents.
The October 9, 1984, incident occurred in her brother’s upstairs bedroom. The brother was sleeping in his mother’s room, as he often did. Claudia was sleeping in her brother’s room. She was awakened by Costello “tickling [her] bum and rubbing his . . . hand up and down [her] back.” Claudia was scared, and she protested. Costello persisted, and sexual intercourse followed.
On November 24, 1984, Claudia was again asleep in her brother’s bedroom when she was awakened by Costello. This time Claudia insisted that they leave the upstairs for fear they would be discovered. Claudia and Costello went downstairs to the room used as a living room. As she sat on a day bed smoking a cigarette, Costello came behind her with his hands around her chest. She asked him, “Am I crazy or are you crazy?” To which he answered, “No, we are both crazy.” Costello removed his clothing, and they engaged in another episode of sexual intercourse.
In December of 1984, Claudia had fallen asleep watching television on the day bed in the living room. She was again awakened by Costello and again they had intercourse.
*692In mid or late February, 1985, Claudia was in the basement of the house playing pool with Costello. She sat down on the bench of an exercise machine and performed some weightlifting repetitions. Costello went up behind her and started to do pushups. She got up and sat on Costello’s bed in the basement; there they had the fourth act of intercourse. According to Claudia’s testimony, this was the last occasion on which she and Costello had sexual relations.
Fresh complaint testimony. At trial, the Commonwealth called Claudia’s therapist, Frederick Auerilo, a psychiatric social worker, to testify as a fresh complaint witness.3 Over the defendant’s objection, he was permitted to testify as to statements made by her.
Claudia’s discussion with the therapist took place twelve months after the last incident, and the issue before us is whether the delay was too long. She first saw Auerilo in January, 1986 (at the suggestion of a physician treating her for gastrointestinal symptoms), and, under questioning by him in February, 1986, told him of her relationship with the defendant. Although reluctant to discuss her encounters with the defendant, she indicated to the therapist that there had been sexual relations more than once. She was uncomfortable in listing the exact dates. The therapist gave her “kind of many parameters, and I said, did it happen within the past year?” She answered, “Yes.” At a later time she was more specific and stated, “May or June of 1985 [was] a time when they had intercourse.” The therapist did not testify to any other aspects or details of the incidents.
Prior to Auerilo’s fresh complaint testimony, Claudia, when questioned at trial as to why she didn’t tell her parents, had explained:
Q. “Did you ever have any conversation with the defendant about your telling your mother?”
*693A. “Later on I, you know, I was like, I had told him that my mother was going to find out. And he is like, [Claudia], your mother can’t. And he said, your mother will kick you and I both out of the house. And I was like, [w]ell, I guess I can just go live with my father or something. And he says, [Claudia], your father hates me and you don’t think for a minute that if he found out that you were doing this with me, that he is going to want you to live there.”
Q. “Did you ever tell your father?”
A. “No.”
Q. “Why didn’t you?”
A. “Because I was scared, and I thought that — I thought it was my fault. I thought I brought, I thought I was making him do it, or I thought that, you know, in order for him to be a friend of mine, or in order for me to have someone close to me, that if he had to do this, you know, that wasn’t a big sacrifice to me then. You know, it was like, well, at least I have somebody, you know, with me.”
Claudia also testified that after the defendant moved out of the house, she was “very, very upset” because “he filled a lot of void in my life.” Thereafter, she continued to see him until her mother told her if she ever saw him again, she would “kick me out of the house.”
In determining whether the delay in reporting the encounters is reasonable, the analysis “should be flexible and attended by due consideration of factors which reasonably might cause a child to repress the urge to cry out to a third person.” Commonwealth v. Swain, ante 433, 439 (1994). While passage of time is important, “freshness” is “not solely' a question of the clock or calendar.” Commonwealth v. Dion, 30 Mass. App. Ct. 406, 413 (1991). Among the factors “one *694considers [are] whether threats or other kinds of intimidation were applied which might inhibit the first utterance of complaint, and . . . what was the relationship between the complainant and the person accused of the crime.” Ibid.
Here, the victim was close to the defendant and was afraid of losing his friendship. She was afraid her parents would find out, be upset, and, perhaps, “kick her out.” Moreover, she was confused as to whether she had been at fault. Indeed, in nearly every weekly session with her therapist she discussed “her feelings about what had happened . . . and whether or not she would ever tell her parents, how she may, if she were to, what she would do about it, her feelings towards Mr. Costello, her ambivalence, her guilt.”
While complaints as means of corroboration lose reliability with the passage of time, in this case the judge, in his discretion, properly could consider Claudia’s fear of her parents’ finding out, her guilt, and her ambivalence toward the defendant as sufficient explanation for her earlier failure to divulge the relationship to anyone other than her girlfriend. His conclusion that her statements to the therapist were sufficiently reliable to be admissible as fresh complaint was, in these circumstances, warranted. The therapist’s testimony was not inflammatory, contrast Commonwealth v. Flebotte, 417 Mass. 348, 352-353 (1994), and, while the date given to the therapist as to one incident was not totally consistent with Claudia’s direct testimony, the discrepancy was inconsequential. Compare Commonwealth v. Tingley, 32 Mass. App. Ct. 706, 709-710 (1992). The May-June date does not appear to be an additional incident not charged but rather a failure on the part of Claudia to remember the exact date of one of the rapes.4
The fresh complaint evidence was also, in large part, cumulative. In November or December, 1984, Claudia first told *695her girlfriend, see note 3, supra, about what was happening, and the girlfriend testified to one, at least, of the incidents. Moreover, Claudia and a policewoman, without objection, testified that she had informed three people of “these incidents,” namely, her girlfriend, her boss, and her therapist.5
Limited cross-examination regarding Claudia’s sexual knowledge. The defendant contends that there was error in restricting the defendant’s cross-examination regarding Claudia’s sexual knowledge. Defense counsel sought to elicit from Claudia and her therapist evidence of her knowledge of sex gained from sexual activity with a man other than Costello, allegedly occurring in January of 1986. General Laws c. 233, § 21B, the so-called rape shield law, ordinarily prohibits such inquiry. The defendant’s reliance on Commonwealth v. Ruffen, 399 Mass. 811, 814-817 (1987), is not warranted. In that case, the defendant was held entitled to a voir dire examination to show that the victim had been abused in the past. Had that earlier experience been similar to the abuse alleged, the court held that that evidence would be admissible to show that the past abuse, rather than any experience with the defendant, explained how the victim (ten years old at the time of trial) acquired sufficient information to describe the sexual acts. Ruffen is inapposite. A fourteen year old testifying when she is eighteen (almost nineteen) years old may be assumed to have sufficient knowledge about sexual matters to discuss intercourse.
Request for a mistrial. The defendant contends that the judge erroneously denied the defendant’s motion for a mis*696trial after Claudia’s girlfriend, a prosecution witness, made irrelevant and potentially prejudicial outbursts during cross-examination. Among other nonresponsive comments, she stated that Claudia was upset because she thought Costello had impregnated her and that the defendant had shown them pornographic films and had offered them alcohol.
The nonresponsive remarks were potentially prejudicial, but “[t]he decision to deny a mistrial lies within the sound discretion of the judge. Here, the judge relied on curative instructions as an adequate means to correct any error and to remedy any prejudice to the defendant.” Commonwealth v. Amirault, 404 Mass. 221, 232 (1989) (citations omitted). The curative instructions were clear and prompt — the jury were instructed immediately after hearing the outbursts of the witness that the remarks were not responsive, were to be disregarded, and that no attention should be paid to them. The judge also admonished the witness in the presence of the jury. We will presume the jury followed those instructions. Commonwealth v. Helfant, 398 Mass. 214, 228-229 (1986). See Commonwealth v. Martino, 412 Mass. 267, 281 & n.10 (1992).
Closing argument. The defendant also challenges the prosecutor’s closing argument. We emphasize that the concern of the appellate courts in regard to prosecutorial misconduct has been expressed repeatedly. Commonwealth v. Smith, 387 Mass. 900, 903 (1983). “[Ejxtemporized arguments only serve to increase the burdens on the trial judge and to provide grist for the appellate mill.” Commonwealth v. Grammo, 8 Mass. App. Ct. 447, 457 (1979). Improper comments to the jury are only self-defeating. Commonwealth v. Shelley, 374 Mass. 466, 472 (1978).
The prosecutor said the following in her closing argument: “Well, isn’t that just a little too good to be true? . . . Isn’t Rick Costello’s, I’m a wonderful human being, I’m being railroaded by this vicious family, isn’t that just a little too good to be true? Or is he really such a great guy? Maybe he just sent his halo out to the cleaners for this week.” These comments improperly attacked the character of the defend*697ant. See Commonwealth v. Burke, 373 Mass. 569, 575 (1977) (attack on character of defendant improper where that was not an issue at trial).
The prosecutor also remarked that, for the jury to believe the defendant’s version of the facts, all the prosecution witnesses had to have conspired against him. These remarks should not have been made. See Commonwealth v. Thomas, 401 Mass. 109, 115 (1987). Nevertheless, these remarks, even considered with the prosecutor’s other improper comments, do not justify reversal.
We have reviewed the remaining arguments of the defendant and conclude that they have no merit and warrant no further discussion.
Judgment affirmed.