Man that sounds real rough U! She really sounds infuriating!! One of my colleagues with an XW gave me a pretty good mental principle. "50% of their time has to be enough. Everything else is just business" It sounds like you are pretty well routed and can take it, but you really don't have to take any of it. You don't HAVE to do a single thing to her liking and long term you don't HAVE to even communicate with her. I too want to co-parent but realizing I don't even have to consider W is a freeing thought.
I hope the co-parenting counseling goes well. With all that manipulation I really understand you don't want anything to do with her. You can always imagine her taking a dump while sitting there. Might lighten things up.
Me: 34 Stbxw: 30 D:5 D:3 Mini bd: May/June 2019 Married: Aug 2019 BD: 6th Dec 2019 OM Confirmed: Feb 2020 March 2020: I filed for D Waiting for D to be finalized and W to move out end of January 2021