Sorry AuntConnie, I got the impression the extent of her "behavior" was just being discovered upon entering her home. I understand that all the effort in the world cannot fix the underlying problem.
Although not a hoarder, we had a brother in the congregation where I grew up who probably should have been institutionalized but was ... somewhat functional. The brothers and sisters would take turns cleaning his home. He could make his meals, take a shower and get dressed but had no other concept of cleanliness, including a casual attitude toward using the toilet.
It was disgusting and a huge burden.