I made friends with someone because I thought she'd be low maintenance and there didn't seem like I would care about her later on. Also, because we had another friend with us even if I was wrong he could still be there to help deal with it.
None of those things apply anymore, the drama she has is unreal, but I can't step back and detach myself because I actually care about her success now. And since the other friend completely left I have the full responsibility.
Solutions? No fucking idea perhaps someone here can give me some advice.