Love Lessons - I have a question.

Currently re-reading this book for the first time in years. I know Prue was groomed but why does she get excluded from the school in the end? Is it just for telling Rax she loves him and babysitting for him? Also I know she tells Rax it’s not his fault but it clearly is - but I guess that’s what grooming is, thinking everything’s your fault and not wanting your abuser to get in trouble.