[rented_mule]

I like the 988 advice. I'd take it a bit further... consider getting professional help (counselor, therapist, etc.) for yourself as well, at least temporarily.

I see at least two angles where this can be beneficial...

One is getting guidance on how to keep yourself as mentally healthy as possible while going through something so difficult. This is at the heart of the ideas I'm responding to above... you have to stay afloat to have any chance of helping. If you've ever been on a commercial flight, you've heard "Put on your oxygen mask before helping others with their masks." The right professional can be a big help.

Another is that a professional will be able to give you guidance about what you might be able to help your friend with, and things you probably shouldn't try to help with. Professionals have seen a much broader spectrum of situations and have a better idea of where they themselves might be able to help (or not) and where a layperson may be able to help (or not). And they can give you ideas for things to try that might help your friend while exposing you to less risk of harm.

You're taking a smart step by asking for advice. In my experience, a professional often has the best advice.