Jack, Some of them will spout that they have nothing to feel guilty about. My xh was standing in my kitchen one day while I was reading the newspaper and just announced to the world that he had nothing to be ashamed of or guilt for with his leaving. I just looked at him because I certainly hadn't had a conversation w/him at that point and he had been gone for over a month.
Things like this may pop up and be voiced during their journey. I have been told it's called thinking out loud. Who knows.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.