Originally Posted by Synnen
She knows that her sister needs help. She's asking what kind of help they can get her.
Your mom took her to see someone, but that didn't help? How long did she go? With counseling, it takes MONTHS to start seeing improvements! With issues that huge, it could take years!
If she is hurting herself, she needs to be in an inpatient program, especially since from what I am getting from your question is that she is talking about and/or attempting suicide. If it's a matter of money, your mother should speak to a doctor about possibly getting help from the state for the financial side of it.
Your sister is definitely crying out for help, and I'm SURE that she wants more than to just move out. Counseling with a trained psychiatrist or psychologist will definitely help.
Good luck.