My wife has said many times recently "want this to go well between us". I think she means, when she moves out, that we do not do hurtful things to each other to make our lives more difficult. She also seeks my constant approval for her as a mother.
It's up to you how to live your life... If this ends in divorce the best thing you can do for your kids is be respectful and polite to their mother. Often you see divorced couples that say bad things about their parents to the kids, fight in front of them....whatever.. all this really does is hurt the kids. they love you both. never put them between your differences. That's why it's best to just develop that civil, business like approach to your waw right now. Let the anger go, let the control go and come to peace.
what do you think of her.... hmm well tell her you just want her to be happy and fulfilled in life and you want the same for yourself. Tell her you understand why she feels why this marriage has to end and you are just trying to understand and come to terms with where you went wrong. As far as her buying gifts for the kids... who knows why... it's mind reading as to why she does what she does and it will get you no where.
the phone... I'll say it again those with nothing to hide, hide nothing. do you always ask her about it?... do you always act upset when she does it... even if you say nothing, your body language or actions will tell her exactly what you are thinking. Obviously she doesn't really care about your feelings right now, so by doing those same things, you will get the same results... It's all part of letting go. What if you didn't ever say a damn thing about it... what if she could tell you didn't give a flip about what she did? Change the way you act and the dynamics of your relationship will change...