she also told me the man she was attracted to "doesn't exist" as he was some fantasy that was created due to the "fog" she was in
That's true, and I'm glad she's smart enough to realize it. That shows progress. She does need to "affair proof" the M, however, by being aware that seeing the man who she fantasized about could still trigger some fog. It just pays to be cautious for a while, even after the EA has stopped.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
