Your sitch is pretty similar to mine. W pulled the rug out on me a month after her mom passed away. Initially said we were separating and leading me into thinking there would be opportunities to work on us..no dice.
The further it gets out, the colder she gets.
Best of luck going forward!
Me - 38 W-37 S6 M 10 years T 13yrs BD 3/18 W moves out 4/18 W files 7/18