It does sould like mania, but it's hard to say, is she losing sleep? Does she talk like she thinks she might be the next messiah?

That's nice of you to care about her, but I can't say one way or the other whether or not you'll get back together with her. I personally wouldn't. The best thing you can do is tell her family what's happening and what you think is going on, so they can take intervening action if necessary.