My mom, who is now 85 years old, keeps a mason jar in her room at night to pee in. It drives me BONKERS. I bought her pads and diaper undies but she can't get past them - she hates the idea of wearing them. What it really boils down to for me, is that she is just lazy...the bathroom is 7 feet from her bed. She's either reading a book or watching one of her programs and can't be bothered leaving her room. It is gross and her room reeks! I am constantly mopping in there because she often 'misses' the pot. Ugh.
I don't know about all the disorders and diagnosis talk above (I've always considered my mom a major difficult child), but if it's on target, then my mom's the oldest difficult child on the board.
Jeesh, Terry. Hang in there, I hope your therapist can help with this.