From what you have described, it sounds like she is pissed at what she is hearing from the C. I don't think the C is validating her decisions, like you are.
Good to hear that your R with MIL is still pretty good. Mine is also, but I find it difficult to see her unless I am picking up DD for W. When I do go over there, we have a nice cuppa and good chat. She is also supportive of me, and is trying to ease W back into the M. But at end of the day blood is thicker than water, regardless.
lotsu luck, AndyV
AndyV M38 W36 D7 M 13 years Together 17 years W wants D mid Dec 06 (ring off) W wants separation early Jan 07 (she backdated to Oct 06) EA revealed end March 07 (Nov 06 W first meeting with OM) Hallmark moment "I care for you but am no longer in love with you."