I am in full concurrence that you need to stop attending MC with her. MC only works when both people are willing to work on the MR. But I am not in favor on how you plan to do it.
I think a short, sweet text message saying: "I’ve decided against continuing marriage counseling. I feel that it would just be going through the motions at this point. A lot has happened and I need help processing it so I can heal and move forward."
Do not follow it up. Do not react to her reaction to it. YOu said all you need to say on the subject with the above.
That should read: A lot has happened and I need time processing it so I can heal and move forward.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018