You may not see the guilt being exhibited. It could be hidden until she's alone, away from you and the family. Being nice is one way of off loading the guilt. Some are very nice and others do nice things such as repairing things or purchasing items for the LBS. Even if the person is rational, there are a some that will go over board and purchase lots of stuff and give it to their children when they, the parents, know that they've not spent a lot of time w/the children. Guilt can be displayed in many ways and not just w/the eyes looking down versus looking directly at you or shuffling of the feet, etc.
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.
