Is she addicted because then she could go to AA meetings. Hear what could happen if you go down that path, as well as the stories of hope & success.
Also, she has to be doing this for a reason. Did she have a bad past she needs to work through? Feelings of not being worthy or caring what happens to her/ whether she lives or dies? I would also suggest counseling if thats the case.
Rarely do people act out for no reason so if she can get to the root of why she does that and any pain shes not working through she should be fine :) @SW-User