Yes, it is "worse before it gets better" but because YOU will get better (you are! every step of the way) not because she will. Who knows why she's acting that way. Just shrug your shoulders and find something fun to do.
Your question sounds like you're inquiring if she's on the edge of changing. I think that's a way of trying to mindread or read the future. Your WW is acting terrible, so you should gently step aside while she is swinging her fists at everything around you. Do not get hit, do not engage.
I am getting better. Stronger. And that is why I was able to have the conversation I had with WW yesterday about not wanting a D anymore. I backpedaled. As AS said, trying to shock her out of it backfired. I thought it as much the day after but did not bring it up since.
I have expressed to her that I don't intend on living like we are forever, but yesterday I did tell her that I can put up with this a little longer. I did make it clear that I don't want this divorce.
I had hoped that she would not bring this topic up again but she did.
Hindsight is 20/20. I could have kept my mouth shut when I said "divorce" but I didn't. I could have told her things calmly but I didn't. I have owned up to it and I told her as such.
I have been anger-free (to her) for almost three weeks. I know that it's going to take months of consistent behavior to take root and even then who knows what is going to happen as time progresses.
I have also told her that this experience humbled me and taught me a lot of valuable lessons. She sees and acknowledges the changes I'm making. When she tells me that, I say that this experience, as tragic as it is, was needed. I have been the happiest I have been in a long time. And I am going to show it to her and try to share parts of my happiness with her. My goal is not to nice her back. My goal is to show how much more amazing I am. She gets to choose what she wants to do.
My growth has been slow and painful. But I am starting to see the fruits of my efforts.