It's sad and it is a psychological disease, where they feel if they give anything away it will be disastrous. My DH thinks I'm a hoarder of fabric, and maybe I am, but we can move about freely. It's very sad though and has to be tough on her family. I had a friend who qualified as a hoarder, and although I never saw her house, I was told that there were pathways of "stuff" and her daughters could not help her, so it was tough when she passed away in her 80's. It happens more than people realize.