Perhaps a simple statement, at the beginning of the trial, explaining to the jury the nature of hearsay evidence, and that it does not necessarily reflect an accurate picture of the victim. It is only opinion, albeit expert opinion, and other and different interpretations may be as, or more, accurate. The jury is to use their common sense and their own experience to interpret all testimony, no matter the source.
This may seem self-evident to some, but if it were a required statement made to every jury, it may serve to emphasize the nature of the testimony to be heard and attenuate any blatantly inflammatory testimony, no matter the source.