You have a smart mom. Six weeks ago, my dear 91 y.o. mother, on her death bed, asked if I thought she was contagious, as one sister always wore a mask. Mom had recently lost her senses of taste & smell, but she had been home for a month with minimal visitors. I asked Mom, "Contagious with what, death? Yes it is contagious. We are all going to die." She actually laughed. This was within 2 days of her death. Very peaceful, in her own home, in her bed, on her terms. So blessed to be with her for her last days.