Oh Lindsay, I'm so sorry for your Grandma. I do understand that she just wants this over and done with, but it just isn't right, it just isn't. It makes me so sad, how can people be so heartless, I just don't understand.
I hope she can move on with her life and be happy again, it may take some time, but I hope she can. You certainly must be a light in her life! She's lucky to have you and you to have her!