[lioeters]

That must be a difficult situation, and you're a good friend for trying to help. I've only had a few brushes with similar mental health issues in friends and family, but in the worst situations it was necessary to get professional help, such as police, hospital, community services. (Police as the last resort.)

This is beyond what any well-wishing friend can be expected to do. I think you need support from other people with experience in the matter. It sounds like your friend needs psychiatric treatment, probably medication. Maybe hospitalization until things are stable.