Have you considered that the MC is just trying to shake things up too?
Kind of RISKY but it might be what is needed to bring your wife into her 50% of the marriage.
I have seen some of your sich but have not read every post, MC only works when both parties are committed to making the marriage work.
Right now it seems to me only you are committed to it.
Your wife is in lala land somewhere, so what the MC is suggesting is that he/she can not do their job unless she commits to take some action for herself.
FWIW I went to six months worth of MC/IC that my wife used to validate her desire to divorce.
As far as your marriage being over, you need to LET GO, however it is only really over when YOU decide, not anyone else.
I am assuming that you have read the MLC resources. Your sich sounds very familiar.