The best thing for you to do now is to back off of your W and give her space. No arguments, no talking about your relationship, no pressure. I know you fear losing her, which can certainly happen and (to be honest) is fairly likely, but I can guarantee you that if you press your W you will push her away, perhaps permanently. Stop chasing her.
Focus on improving your own self. Get your own house in order, so to speak. Self improvement. GAL means Get A Life -- develop your own life, rediscover yourself through your activities. Find your purpose in life and the kind of man you are and the kind of man you need to be.
I am not saying go off and forget your wife, but for your own sake, more-so than hers, you need to be the person she fell in love with. Like metal, you need to refine yourself in the fires of adversity and temper your personality.
Just be a friend to your W now, with no strings, no expectations on your part. Expect nothing from her at this point, but be her friend. On those times she puts you off, holds you at arms length, don't press. Just be.
Most of all, you need to realize that you have a great blessing in your daughter. She should be the focus of your desire to improve yourself. She needs a good, strong, selfless father in her life. Even if your W never returns to you, you should strive to be the best person you can be, for your daughter's sake.
