sam, I'm sorry you are here, but we have a great group of people who are at various places on the crisis path due to their spouses and partners.
The best thing you can do is just leave her alone. Focus on you for the time being. The more you try to get her to see reason, the more determined she's going to be to stay out there in the land of Oz. If she is in mlc, you will not be able to have rational conversations w/her.
At this time, I wouldn't say another work about Michele's workshops because she's not at the stage where she would actually listen and get something out of it.
I know this is very tough on you, but you didn't break her, therefore you can't fix her. The only person that you can work on is yourself. Give her time and space.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.