If it helps–people can always use help, but you’re not always the right person to provide it. It sounds to me like she’s going through some sort of crisis herself–cause and nature unknown–but I’d say it’s pretty certain you can’t help her, and she’s sure as hell not helping you. My advice: Walk away, stay away, protect yourself, but don’t do anything that could be interpreted as unkind. It may be she comes out the other end of whatever this is months from now and will tell you what it was all about, and it will suddenly all make sense. But probably not.

Long story short, I think you’re doing the right thing. Don’t demonize her, she may have serious shit going down you don’t know about. And shouldn’t know about for a while at least.