Hello Debp,
Your mother is showing all of the same classic signs as my MIL showed just before she died. My wife and I had to encourage the other family members to not hold onto her and to bless her by released her to die peacefully.
My wife wanted to care for her mother at home but after one night the level of care for her mother was beyond her ability to provide, so we had to put my MIL into hospital to have the best care for the last three or four days while her body was finally shutting down to die. Initially she was angry at her daughter for putting her in hospital, but someone else intervened when they spoke with her, and this helped her to die peacefully.
I know that this may not be the advice that you are wanting to hear, but sometimes we have to let go and let God take care of His own.
Shalom
PS: - Debp, I have been wanting to post this for a while now. When my father fell and broke his hip at 92, my eldest sister wanted the miracle of modern medicine to intervene so that his hip would heal so that he could keep living. His father died when he had fallen and broken his upper leg bone near the top ball. Both my grandfather and father had heart issues as well. My father was very agitated initially when he was put in hospital, but he quietened down and died peacefully. Hopefully, when it is my time to die, I will not do so disgracefully.