Hello Dave,

You have been one hell of a caregiver to both your parents. The love you have for them leaps off your postings. Although your Dad is gone I'm sure your Mother appreciates you more than you know.
It's tough on the wife of a patiant or caregiver. There's only so much time in a day. Give your wife a big hug for me and tell her how you feel. She sounds like a great person.
Don't beat yourself up over things you can't control. You know as well as anyone how much you've done.
Thats the biggest problem with this diaease, There are times it controls us. Hoping what I said makes some kind of sense to you and sleep tight.

Danny Boy