Hi Platinum Heart,
My heart goes out to you for everything you are going through! It's so difficult to see somebody you love suffer. Also, my husband is bipolar, so I know that makes everything even harder to deal with.
I think it is awesome that you love your grandma so much and are trying so hard to be there for her.
But PLEASE don't neglect your own health! Make sure you are taking care of yourself. . .including getting nutrition, liquids, and rest.
You need to take care of yourself so that you are well enough to keep supporting your grandma.
When is your grandma having the surgery? My husband's aunt had a pituitary tumor in her brain. They didn't want to do the invasive surgery of breaking open her skull because she was in her 70s. Instead, they did a procedure where they go up through the nose. I wonder if they could do your grandma's surgery that way? It is much less traumatic.
Please keep us posted!
My hugs to you. . .