After reading about her last night on here, I am happily not surprised that she was arrested. She, quite obviously, has some serious mental issues (I'm not saying she was 'insane' at the time) because some of the things she stated just didn't make sense. I also don't believe the 'internal bleeding' bit at the hospital. Yes, I believe she was at the hospital but wasn't she the only one that said why she was at the hospital? I'm thinking perhaps she tried to harm herself. I don't think the grandparents had any idea that she commited this murder. By the wording of the statement from police, it wasn't an accident, it was 'murder'. I'm betting the grandparents took her in to help her take care of her daughter and also to keep an eye on her knowing that she is a troubled soul. Perhaps they thought that she just needed a relationship with God in order to get past her mental troubles (there are some churchy people that think that way). OMG, makes you kinda afraid to let your kids go anywhere without you, even to friend's houses...you can't even trust the moms.
Sorry for rambling, I just woke up and haven't had coffee yet.