Grandmother (96) had a stroke, was released from hospital, and now yells for help constantly. What can I do?

My Grandmother lives with my parents. She has for years. We are a family who do not believe in nursing homes. We work hard to take care of our family. A week ago my Grandmother had a stroke on the right side of her brain. She was in the hospital for one week. She is 96 years old. The hospital doctor said that she will improve. We noticed, however, that when she was in the hospital she started yelling "Help Me", she kept her eyes closed most of the time, had a hard time swallowing, etc. But the hospital did say that she has not lost her speech. She has "weak" speech. She knows who we are, including my dog! But she does seem like she is a little out of her head. The hospital said they were no longer able to treat her. They thought she might do better once she got home. Once we got her home, the first two days were very rough. She yelled "Help Me" over and over. But then on the third day she really seemed to improve a lot. I mean she could sit up, eat (in small quantity but still she was eating), answer us, etc. So we were very hopeful that she might be improving. Then on the fourth day. That was hard, really hard. All day she has been yelling out "Help Me". My parents and I try everything, from food, blankets, bathroom, sitting, rubbing her legs, anything we can think of but she keeps yelling over and over. We have no idea how to help her. Would hospice be of any help at a time like this? We didn't want to call hospice because the doctors all seem to think she will get better. Not sure who to call or what to do. Is hospice the answer here? Or is it something else?