Saddle up with a shark of a lawyer, document all the time you are the primary parent... Show her that you a strong and will not be walked over, and if she wants a divorce, it will be ugly, and it will all be on her head.
You need to throw a hiccup in her plans.
Me: 37 W:33 S: 2 M: 9/5/09 Suspected: 1/7/12 Confirmed: 2/10/12 Served: 3/29/12 W moved out 3/30/12 First court 5/17/12 HELP!