A couple things. First of all, you sound better now. I know you hurt like hell still, but I hope you now realize that you daughter needs you no matter what.
Secondly, feeling better about yourself is all you have right now. Since you WILL be here to see D's next birthday, and the one after that, and the one after that, if it's up to you, then you have to learn to accept yourself and THEN work on the things that need working on.
Your W, no matter what she says, is not doing these things TO you. She is just doing them. You can't control that and the more you try, the more you push her away. I know it sounds like a catch 22, and it is in a way. If you let go, she may run. If you don't, she may run. You see, there is NOTHING you can really do to force the outcome here.
So, you are left with you again. I know that seems to suck, but I assure you, from the bottom of my soul, that when you finally GET that, and GET that it's up to YOU to be happy, not up to any woman, then you WILL feel better. THEN you will feel in control.
You are not weak, you are just feeling pain. Feel that pain, learn from it and then learn to pick yourself up and move on. We all did it, and you will too. We were all in the same place as you are and we made it to a much better, often happier place. You can too. I believe this with all my heart.
Please, be the man that your D will someday look to for advice before her first date and forever with a gleam in her eye as the one man in her life that will NEVER give up on her no matter what.