Hopefully they won't try to put some of the blame on her. That would be a horrifying defense in this case, IMO. She did not choose to "commit suicide." As someone pointed out earlier in the thread, she was trying to find something to eat until the very end, trying to survive.
My speculation only: Maybe she did develop severe anxiety and did strongly protest at being taken for treatment. But so what, that's why there are doctors and mental health professionals to call for help. I feel her parents didn't want others to find out about their "problem." Kept it secret, no matter what, even when it became abuse and she was clearly suffering.