Mike, I have really bad cancer, the operations, the radiotherapy, the chemo and all of the fear and pain. The worst is that nobody is really in it with the one involved - can't be because even though there is empathy it is still carried alone.
Cancer is not a death sentence, even though that is what was given to me. I really do know what you are going through and you are in my prayers.
All I can offer is advice from one who has been there and faced death. So, if there are questions, feel free. It really is going to be essential for your love to cover her.
Keep well.