I think you need to leave her alone for a while. When she comes back to the RH, I think you should pull back. She is too on edge. The slightest push from you and she's going to run. I don't how you can do it, but if she doesn't get out from under that RH, your M may not reconcile. No matter how financially profitable it may be, it could cost you the M. I'm telling you.....burn out can be like pouring gasoline on the fire if she's in an A.
If she is still seeing OM, then this pressure with you and RH could be enough "excuse" to leave everything behind her. Maybe she is looking for an excuse, IDK. However, you waiting to meet her with a discussion about her recent behavior is not a good idea. IMO, it will be bad timing.
Stay away from the RH and don't contact her. Wait and see what her next move will be.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!