She might very well be the source of your problems, but can you control her or her actions? You can only control you and your reactions. You will have to be the one to change. It sucks, but it's true. Funny thing is, when you change sometimes you realize that they aren't really what you wanted or needed to begin with. Learn to live your life.
I hope you have a great time on your vacation. Enjoy the kids! Leave the BS at home. Focus on making some awesome memories!
"It is excruciating pain. It is the pain of separation, the pain of loss, the pain of dreams and expectations unrealized. It is the loss and death of a mirage."