Hi Fuzzy Bunny
Jane wants my wife, me, and a couple of friends to sit down together to find out who is lying about what.
A difficult idea, even with so called normal people. You cannot prevent her from doing this. You can only say, what you think about it and if you are part of it or no.
As you said:
I will not run from my wife but I don't engage her either. If I want to talk to a person even though they work together I do.
Stick with it and stand your ground.