My abuelas suffering

My abuela is the most pure, smart, and quickest sould you'll ever see. I love her more than anything. She developed dementia 8 years ago, when I was 6. I spent as much time as I could with her. I dont have many memories but I have some. My most clear memories are the stories of her dementia. She would leave the house in search of her mother. She would forget the soap when she washed her dishes. She would forget we were coming over every other day. When I would go to get a snack from the vending machine she would forget and search for me. Now she lives in a medical bed. She is unable to move. She lives in my aunts basement now. She used to travel back and forth between me and my aunts house ever since we found a cab for weelchairs. Before all of that she lived at my house. Id feed her, change her, watch tv with her, rest then repeat. She cant talk, her body is like a rock, but she is still alive. She is 91 the care givers and doctors say its a mirical, I say its torture. I couldnt imagine being trapped in my own body. Unable to do anything, Unable to even swallow a pill. I miss the old her. She is suffering and I prayed tonight. Ive cried and prayed many times for her. I dont want her to suffer. even if it means that I am sad she deserves that hope of a heaven above to take care of her. I just dint know what to do anymore.