Dear Carol
I am writing to let you know that I feel your pain, but please don't question the fact.
Your mother had cancer, so be it.
We are all going to die, but the only difference is that you know in advance what will make her die.
Take my advice and try to make it easy for her, no one knows when she is going, but try to enjoy each and every moment you spend with her as will all be memories later on.
Tell her she did good in her life and that you are all there for her, she deserves it.
By the way; I lost my mother 30 days ago because of Colon cancer...May God be with you.
Shaamel