Your wife is in the early stages of replay. Replay may take years to work through. She will question/doubt herself about what she is doing and then still do those things because she feels she has to. I am going to suggest that you try to put the "stages of MLC" out of your mind for a while. Those stages are nothing more than a guideline to help you better understand some of the actions that they exhibit
She is going to do whatever she needs to do to take away the pain, i.e., it could be drinking, drugs, shopping until she drops, gambling, exercising, and OM. She will try many things along the way and when one thing doesn't work, she'll try something else.
She doesn't know what she wants and yes, she is going to do a whole lot of projecting on to you. For example, if you don't tell her who you are meeting up with, she will accuse you of having an affair, etc. Don't buy into her drama. Leave her to her own mess.
You didn't break her, therefore you can't fix her. She has to do that and she will in her own time, which is very slow.
Read as much as you can about depression (the main ingredient of MLC) and MLC. Ignore the timelines because each person is unique, therefore their crisis will be unique.
Keep the focus on you and dig deeper for patience!
BTW, why aren't you sleeping in the Master Bedroom? If she's not happy, she should have been the one to move out of that room.
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.
