It may be too late to really change the divorce at this point. But it's never too late to be the best person that you can be. There are couples that re-unite after divorce. People go through all kinds of changes in life. And sometimes they get a better perspective further down the road. I think right now, the best thing is to make sure that you don't burn your bridges with her. You can't control what she does, so you are only upsetting yourself by focusing on it. Just be pleasant to her. Accept that you can't change things now, and move into the role of cooperative parenting with her. The more that you are just a nice guy and good father, the more she will have good feelings about you.