Your W may find herself liking the positive interactions and has to bring up the reminders for her own benefit, too. IOW, she may feel a little conflicted, and uses the self-convincing out loud to get herself back on track.
You might be on to something there - I had dared not hope that myself, but there may very well be something to it... withdrawing even from her family like she has (plus other bizarre behavior) does, now that I think about it, suggest that it would be surprising if there WEREN'T some degree of confliction...
Me: 36 Her: 35 Together 7/09 Married 8/7/10 Separate rooms since at least April 11 "I've decided I want a divorce" 12/5/11 She moves out of state/files 2/7/12 Dissolution final 5/12