Whoa. I'm not even going to go into her issues, bro, because that would mean a whole lotta typing, so I'm just going to get to the heart of the matter, meaning what the best thing you can do right now: Leave. And when I say leave, I mean RUN. If you can't now, save some money and get your own place if you don't have anywhere else you can go.
Since you're not married, entering any kind of counseling RIGHT NOW wouldn't be a good idea. If you would want to stay with her,and seek counseling, you need to have a place to call your own, a place to retreat to. This woman has some deep seated issues that are going to take a while, but since you're not married you have to ask yourself, is she worth it?
What your going through sounds like it could only get worse for both of you.