Okay, let's say she has filed today. Now what? Christmastime will still come. Life will continue. Your children will still be there looking for daddy to be their leader. Those kids need a hero, and if you aren't up for the job--then you better believe they will hunt somebody else out.
You have to get a plan. Instead of staying so glued to what she is or isn't doing...go on about Christmas and living it up with your kids. Then the next week, have some more plans, but get up and do this for them.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
