my .02 ..... my h parents are divorced and are still very good friends, i guess it can happen. I believe they even are still financially involved. Inspite of his 20year rel'p with his common law girlfriend, he still comes by monthly to visit the exW (h mom) & have a drink/talk or to bring her flowers or other presents. Strange, but after a lifetime it can be hard to say goodbye forever.... maybe this is a good thing??
And I could see this working out in a similar fashion. W would have to understand that I am not going to be there for everything she needs, but, she IS the mother of my D's and I would help her when I could. Just because this M is ending doesn't mean I intend to say single forever...
And really, I do want her to be happy and healthy - we all deserve that...