I would have never agreed to the bs she is making you go through. By agreeing to her unrealistic terms you are setting yourself up for this nonsense. Don’t validate disrespectful behavior.
You’re in a bad spot right now because it is financially better for you to wait for her to go to work before you file. I’ve been on this board almost five years and I have never seen a WW not trust a lbs with the kids like your w. You could be in this mess for a really long time.