I can understand your fears and uncertainty about W. If I were you, I'd go ahead and meet with W. I very much doubt she wants to get back together with you. Go in there with an open mind and go with the flow. Don't make any promises or assurances that you cannot keep. A simple, "let me think about it" is good enough.
Yeah, I can see that you've made some real progress and trying to turn around your life with your new lady friend.
