I understand, as you read in my post, almost the same thing happened, we were doing ok, dinner once a week (my cooking-a huge 180) communications were up/positive.
Then BAM, nothing, nothing at all, then I got the talk. She's filing. I'm sorry if that's whats happening. I myself, im moving forward, but in not giving in. I just get to do it from a distance, I can take a bit more, she doesn't know. I'm not gonna tell her, after 22 years, I owe it to myself to hang on a bit longer. Its my turn to do all the work for a while. Its actually helping me confirm my changes actually. I'm ok with it either way. I don't like it, but it is what it is.
You can wait a bit longer, or you can move on, the choice is yours. She's going to have to come to you eventually, so keep the PMA up. It still doesn't mean anything at this point, either way.