"I told her that I wanted her to have a great relationship with her dad our entire marriage."

I'm sure you have. But reading your posts here tells a much different story. We all can see you are still putting much of the blame on her dad. My guess is W has no trouble seeing this too. You have to change YOUR attitude about her dad, before W will believe you, which is why I suggested championing him. Yes, she may think it' all just a trick... that's on her. You just keep on being the new you.

"Is this how she will feel in a month? I don't know."

Good point. So let her drive as far as S/D. Just go with the flow. I don't know if you noticed, but many spouses who say they want D, never seem to get around to doing anything about it. All the more reason for you to make your changes and be rock steady consistent about it. More time for her feelings to change.

M: A really long time.
Crisis: 5 years.
She's still worth it.

Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl