Trying to figure out the WAS/WS mind is an exercise in futility. Even though she was clear she wanted a D, what she didn't say is "but I still want you there as Plan B". You filing for D is a sign to her that you are moving on, and she is losing her power over you.
You got this js, you are doing the right things concentrating on yourself. If you are ready to move on, then moving the D forward is the right approach!
Hopefully you didn't respond to any of those messages. YOu should be NC at this point. No responses unless she asks a direct question, but even then only answer the question in as few words as possible. Yes or no questions get yes or no answers.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018
