Portia, Not all mlcers return to normal and/or become better people than what they were. Some will re-enter the sane world and appear to be the same, and yet, have brought along some of the traits from their mlcing days. Some, will return more settled, more mature and, of course, there are those who return to earth but are entirely different people, i.e., people that we do not recognize at all. Some even remain stuck.
No one can foresee who will bake up nicely and return a better person. The jury remains out on this until the final exit and then we have the option of whether we want to reconcile w/them or not if they should come knocking on our doors wanting to reconcile.
Keep the focus on you and what you need to do to get things settled up w/your parent's estate. Your mlcer's not going any where any time soon.
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.
