How have courts treated evidence of sexual offenses against a developmentally disabled young girl?

sexual offenses evidence reflected frequent sexual acts against a seven-year-old girl in a home environment or family setting. "The fact that defendant committed a sexual offense on a particularly vulnerable victim in the past logically tends to prove he did so again with respect to the current offenses." (People v. Cromp (2007) 153 Cal.App.4th 476, 480 [prior offense of rape of developmentally disabled woman not so dissimilar to molestation of four- and eight-year-old boys].)