Hi Marsha. This must be so difficult for you. I did notice you said she was a 'cutter'. This may be some indication of a future diagnosis of Borderline Personality Disorder. You may wish to ask her care givers/psychiatrists etc. about Dialectic Behaviour Therapy, here's one link I found:
Learn as much as you can as fast as you can and protect yourself financially and emotionally.
Hugs
femfree
Dialectic Behaviour Therapy developed by Dr. M. Lineham