Lori take a deep breath. My grandmother was diagnosed almost nine years ago. She forgoed the treatments and they had said she would have maybe 6 months tops....well she lived normally and healthy for a whole six years. She refused the treatments because she was already in her 70's and knew that her recovery from them would have been worse and probably made her die faster. Anyhow she lived her life normally for that time and only at the very end did she start having any issues. She would only take advils when she had pains.
So while I am sending you prayers and hoping for good news for grandma I wanted you to know with the right treatment, attitude and keeping a good healthy outlook she will do well.
Love and hugs to you and your family.