->My wife walked away with thinking that the C said "Forrest needs to change".
Did he actually say this or did she just think it?
If so what did he say you need to change?

->To a point he is correct.
He or she? If there's any truth in it why not just happily agree and do your part? Then after you've made the "change" ask for your turn.

Perhaps the only reason she agreed to go was to fault you? I remember when I got my W to go to MC she kept bit*hing all the way until maybe the 10th session when the counselor called her bluff and pointed a big finger back at her and she walked out in a huff. So I think there's no use of MC unless BOTH are committed from the start to do whatever it takes. If its merely a finger pointing session or a one sided attack its unlikely to produce results even after 10 sessions.