It fucks with your self-esteem, your sexual development, and your understanding of intimacy. Especially in cases where the abuser is someone the victim knows well and continues to interact with (the vast majority).
Commonly victims will become overly sexual and conflate sex and affection, sometimes even platonic affection. Self-loathing can manifest as heavy drug use and bad relationships because "you don't deserve better"
I hope this girl gets therapy but IIRC the East isn't big on facing problems like this head on