Greetings. There are a couple of ways for you to “help” her leave the home. First, I would talk to her family about taking her. That may mean paying for airfare to NY, arranging the trip for her, etc. Next, cut off her availability to funds. Close any joint accounts, credit cards, etc. If she does not have any money, she cannot buy her alcohol. Third, see if she is willing to go to a treatment facility for alcoholism.
Legally, you can file a claim for divorce from bed and board and ask the court to have her removed. Based on the information you have provided, it does not appear to me that you have a claim for domestic violence (your fear seems to be for what she will do to the house or herself).
Finally, if she is suicidal, you may want to speak to someone at Holly Hill or your local public mental health agency for assistance. Thank you and good luck.
Janet L. Fritts
Attorney with Rosen Divorce
4101 Lake Boone Trail, Suite 500
Raleigh, North Carolina 27607
919.787.6668 main phone
919.256.1665 direct fax
10925 David Taylor Drive, Suite 100
Charlotte, North Carolina 28262
704.644.2831 main voice
704.307.4595 main fax