I think you already know the answer. You told her I am what I am after hearing her demands. You have to be happy with yourself first, and there is no way I can see that happening if you go back to her. That's just a train wreck waiting to happen, again. At you own you could come off the road, but only at your own time. Sorry, I got the tee shirt hanging in my closet. If you feel obligated to help out on occasion, fine, but don't allow it to become a habit. It could be used in the courts to increase support payments if she chooses. Just my thoughts.
Bobbi