What to expect? My mom has now late stage dementia and she progressed very quickly through all the stages. She is in Memory Care.

My mom was moved to Memory Care from Assisted Living (same private facility) after 3 years in September after declining quickly since March. This coincided with COVID/isolation which I am sure was a huge factor. The memory care is wonderful and I have been so impressed with how they have handled her. She was definitely difficult and had issues (calling the police, trying to escape, etc) before we could get a spot for her. I was able to see her about 5 times from Sept - Nov 8th - just for 30 minutes, but so nice to put eyes on her! The week after my last visit, my mom and 7 residents tested positive for COVID so had to go into isolation. The nurse and NP called me a week ago to say that my mom was getting weaker, they think 50/50 from COVID and her decline. She isn't eating and they thought she has a few weeks. I get daily updates from the nurses and know she is being well taken care of, but I feel so helpless! I can't see her or really talk to her since she doesn't remember how to call and really too weak to answer the phone. She is basically just there. She isn't getting out of bed, totally incontinent, etc. Now she is getting some sores from being in bed, but they are treating them properly as well as all symptoms. I just don't know what to expect from here. I am 2 hours away and trying to go about my life, but so sad. Any advice appreciated!