That's not what the story is about.  She is quite a long way from "on her own". She has been allowed to finish the year with her peers. Her parents are extremely supportive, not of the behavior that started this, but of their daughter's needs, and have moved her younger brother from the school and dad resigned his leadership position. She has been accepted by an extremely conservative Christian school. Where are you getting that she has been abandoned?

The story is about her being punished by not being allowed to walk in graduation ceremonies.  While removing her from leadership was an appropriate response to this violation of the school code, blocking her from graduation was not, in my opinion. The failure to address harassment by fellow students and their "adult" parents in an equally vehement and public manner is an egregious oversight.