Your assumptions are a testament to ignorance.
1. The fact that he was dating my niece was NOT OK so don't put words in my mouth. The problem was that I, her aunt, was the only one trying to stop it. I called the police, the school counselors, social services and anyone I could think of to try and get someone to help. It's disgusting, but 14 is the age of consent here so I was told that this little pr!ck wasn't doing anything illegal. He eventually took my niece and ran off with her. I was the one who tried to file a missing persons rept but because I was "just" her aunt, I had no grounds. I was the one however who maintained contact with the police dept on a regular basis in my attempts to locate her. I even took out an ad in the newspaper begging her to call me and assuring her that she wouldn't be in trouble. Almost a year later they surfaced and due to my desperation to finally see my niece and see that she was OK, I allowed them to come over. How dare you infer that this was a situation I was OK with?! You need to think before you callously and flippantly opine about a family's plight.
Anyway, due to the fact that my niece is still friends with Jeremy, I have some inside information on the case and I can say with complete confidence that the girl involved in these murders was just as evil as Jeremy is. No doubt he is a pedophile, that's not in question, but in this particular case she is just as twisted in the head as he is and she was like that prior to meeting up with him. The people who know her (not just taking Jeremy's word for it) know that she was trouble, manipulative, even evil.
Her family was a good solid one. The parents were trying desperately to find a way to deal with her. The relationships with older men were all started online and when the parents found out about it they immediately disconnected the computer. She began meeting men in person so her parents grounded her. She began using the time she was supposed to be in school to contact these men - Jeremy was one of them. She told them that she was being abused and held prisoner in her own home when in fact she had simply lost privileges (phone, computer etc). Her parents were doing their best to control her, but........well......we know how that ended.