You've been very strong through all of this and put your kids first. It sounds like you've got so much going for you. As a friend of mine asked me: "Look at the big picture of everything wonderful in your life, and tell me, what doesn't fit?" What doesn't fit in your wonderful life - your WAW.
Maybe if you do decide to file, she might come around. At that point, only you can decide what to do for you and your children.