Do forget the bottom of your shoes and anything that touches a floor. I wear rubber boots and spray the soles before getting in the truck with Isopropyl after being in public. You could also use a bleach solution, but would have to be careful not to get it on your clothes.
I’m so sorry to hear about Mom. I wish I knew how to make it better. The sores sound awful. Can she eat ice cream? Maybe some rich bone broth. Would salty soft fried bacon be soothing? It sounds terrible.