"Help me"

Two nights ago, was the hardest night we have had since grandma came to live with us. I woke up to the words "Help me" I thought for a moment she must have fallen, but how can than be because I would of heard her? I ran upstairs, and there she was lying on the bed saying "Help me". I put my hand on her forehead, and rubbed her hair back (this always calms her) I asked her what was wrong, and she said "Mexicans are coming, and I think they typically burn women, the white men over there are looking away I don't think they will stop them." I assured her everything was fine and there were no people after her. I decided to sleep upstairs on the couch, as I typically do when she has bad nights. As soon as I layed down the whole process repeated itself. By the fourth time, I decided to try something new and sleep next to her. I crawled into bed, and rubbed her head. This motion calms me too for some reason. I put my palms gently on her forehead near her brow down, then I gently move my hand back till it fully pulls her hair back-till about mid head, I repeat this motion over and over. I notice her breathing changes, and she feels soothed. The reason I do it is, I pray over her mind daily, and this is a way of laying my hands on the area while praying. Once laying in bed she stopped calling for help, but she continued to be worried, and hold conversations. I would rub her head reassure her, and she would stop. This process would continue for about two hours, fortunately it became longer and longer in between each time I stroked her head. I felt Alzheimer's in a whole new way that night. I cant explain it adequately but it is as if I was in a room with ghosts. I lay there in the dark praying against these unseen people who tormented her. I knew they were not real, and yet for a moment I think I glimpsed the fear she must feel. I had this feeling that if I opened my eyes maybe I would see a ghost, someone there waiting to harm us. So I just prayed, and kept my eyes shut hoping against hope that these people real or imagined would go away. It was about four in the morning by now, and grandma was quiet, but she had rolled over towards me and held onto my arm. This seemed to calm her. At five I went to my own bed, then awoke at six to start the day. I found myself experiencing a feeling I hadn't quite felt before, at least not this strong. I wished that the Lord would take her. I saw first hand the demons this disease brings, and the fear that settles in the mind. I wanted peace for her, I want peace for her, so in that moment I prayed that God would take her, and that she would be surrounded by Angels instead. It is now two days since, and my selfishness has resumed and I am recanting what I prayed, and asking God for more time. The truth is, I find comfort in knowing that God is going to do what he does in his time, not mine. She is in his hands, and he will take her when he says its time not when i do. I love her so much, and I do pray that we never have a night like that again. For someone who has all their mental facilities such as myself i was horrified, even though I knew it wasn't real. Lord hear my prayer, for all that I have ever asked you, and trusted even when it was not answered, please give her peace.