What ended up happening? Are things better now? I'm so sorry to hear about that. I'd be so sad watching someone in my family go through that, it really does sound like her OCD is making her suffer, especially with the blisters on her hands, and just cleaning and cleaning unreasonably for hours.

OCD can be hard to deal with but it is not unbeatable. If she doesn't know she has it I think a diagnosis will help her confront it.