Tree, you have read enough on this site to know one thing.
If it is indeed MLC, there is nothing you can do to force the situation. You have to ride it out. Can you do that?
That is why suggesting MC, IC and Retro is just going to make her push back harder. In her mind, she is 100% in the right and you are a complete buffoon, and she can't imagine why she ever wanted you in the first place. That's in her mind. Of course we know it isn't true, and she is temporarily insane, but you'll never convince HER of that.
Read some of the stories in MLC forum...especially the ones posted by folks who came back out of the fog.
They will be the first to admit that they were miserable, unhappy and confused the whole time, while they told everyone around them that they felt released, free and unbelievably happy. And now that they are back, they appreciate that their spouses stood by their side, even through all the crap.
So, once again, is it MLC? Sounds like it. I am no expert, but everything I have read, here and elsewhere, says that it is a process. The lucky ones get through it in months...the unlucky ones, they take years.
Do you have what it takes to stand by, not react, BE CONSISTENT, be there for your boys, and see what happens?
We can guarantee that if you keep the pressure on, she will make a decision...but it's not going to be the one you want.