Just looking ahead a bit here ... when she does recive the papers.
I would have that spew jacket handy ... I would also think with an open mind here. I have followed your sitch since you have been here .. like I said on my thread you and I are DB twins .. born the same day.
What do you want? Is it the D ... or would you be open to WW if she finally woke up and decided to fully commit to working on your M? I ask because logically 2 things will happen with your W, and I do not think its going to happen right away but after this sinks in for her that its very real and your intent is clear.
#1 She very well might have hoped you to end the M al along, so she has her much valued scape goat, appearance is important to her and this would work well as we have discussed .. It was U-turn who wanted this not me ... leaving out the juicy details that would paint her poorly.
#2 She recieves the docs ... and after the initial .. "I can not believe he actually did this" ... then the "Oh Chit" starts to seep in, she might actually look around and realize all she is about to lose, giving up all that cake she has eaten for over a year might just send her on a sugar-withdrawl spiral.
Regardless ... you need to think about both options and have a plan/boundaries and non0negotables inline for both .. they very well might be one in the same, This is where you will be tested like no other, she will pull out all the stops and you are going to have to hold your ground here my friend .... The storm is-a coming amigo.