That definitely sounds like OCD and she needs professional help. Not a JW thing, more of a prison of her own mind. Please get her the help she needs to escape for her sake and that of the family. I'm so sorry for all of you. That's no way to live.
The JWs have so many janitors in their ranks because it's a way to make decent money and to control your own schedule. It's not an obsessive need for order and cleanliness .