Sorry to see that your wife seems to be pretty set in her path. I can see that you are really dealing well with your sitch in a very calm and reassuring manner. At the end of the day, no matter what the outcome is, I am sure that you will come out of this a better person.
When I was in my mini MLC mode a few years ago, XH did make some attempts to reach out to me. But by that time, I was in quite a deep funk, and one leg into the "too little too late" mode. I could see his efforts, but I just couldn't feel them. This is probably what your wife is experiencing now.
If she ever snaps out of it, like I did, I can guarantee you that she will feel excruciating pain and remorse.
You can call me Dory/ Grl.
As a wise fish once sang,"Just keep swimming!"
It's no use to go back to yesterday because I was a different person then.