I wonder if she was pregnant and that was the problem she was referring to... Maybe she told him and said she'd tell others, and Vince killed her... if she mentioned anything to Vince about living with her father... That would alienate Rachel from him, and she probably would have told her father about Vince...
Everyone failed you, and the mother continues to fail her even when her daughter is no longer physically here... How could you go on with a man who, according to your daughter's diary, kissed her, groped her, and even gave her an obscene book? It's a shame the father lived in another state and allowed another man to raise his daughter... Even he admits that if he had taken responsibility as a father, this situation probably wouldn't have happened... Obviously, she was a very strong and brave girl to maintain such a happy attitude while living with a stupid mother and a pedophile stepfather...
Little Rachel, you look a lot like my oldest daughter, even now she's the same age as you... If I were involved in a situation like this, even though I'm not violent, I would take justice into my own hands... I would have taken you with me and you would be protected forever... Everyone failed you, no one was there for you...
Whatever happens,
Rest in peace, little Rachel