I am so sorry. There is really nothing anyone can say to make it go away.
One piece of advice. HOSPICE, HOSPICE, HOSPICE. They have so much to offer in the way of support at all levels. Many families wait much too long to ask for their help.
My father was a home/hospice patient for almost six months before his death. Mom had support any time she needed it, and sometimes when she didn't KNOW she needed it. A male nurse came several times a week to bathe and shave Daddy. A respite worker came to sit with him while Mom got out of the house...did grocery shopping, got her hair cut, just got AWAY for a bit. They provided a hospital bed, wheelchair, commode....anything Daddy needed. Plus the support of social workers. It made his last few months a joy for him and for mother.
I urge you to help your family get this help now.
Sara Anne