How does my sister get her suicidal roommates family to get involved instead of leaving it all on her?
It seems likely that your sister has plenty of justifications for threatening the school with legal action for putting her in this situation, including potential danger to your sister (which the school may be more cautious about post-Virginia Tech). If she can make a credible threat, the school may be willing to ask Jane to withdraw. That might force Jane to seek family support; it might encourage more suicide attempts. If your sister tries to do this, she or the school should make sure that some family or local resources are waiting for her.
I nth the suggestion to get the school involved. Also when your sister does get out, make sure Jane has NO forwarding information — no address, no phone number, not even an email address or block her address. She’s learned that your sister will always respond so I wouldn’t put it past her to keep bothering her even after she’s moved out.
