A good friend of mine's friend was on suicide watch for a while. He couldn't be alone - ever.If she has no reason to live, no hope for a future, she will remain suicidal. She is going to need to something to live for, a reason for living. Drugs aren't a reason. From my experience, if she is get over suicidal feelings, she is probably going to need a dramastic change! There is no easy way to help.
This is really all I can say. I'm sorry you have to go through this!
BMW