Sorry to hear this sad news.
What have you done to raise her body pH levels?
People who suffer from cancer often have very low blood pH, below the normal range of 7.35 to 7.45.
Cancer cells (and pathogens) only thrive in an acidic and oxygen-free environment, so to stop the cancer from getting worse, you need to get the body in an alkaline state.
The first thing you need to do is alkaline her body and blood, by eating and drinking a lot of alkaline food and beverages (green shakes) and by taking baking soda with molasses and by getting a lot of oxygen in the body.
Also you need a heavy detox therapy, have you ever read anything about the Gerson Therapy?
Many people seem to have good results using MMS and MMS2 with a special cancer protocol to fight and defeat cancer.
I recently made my own MMS and my wife and me are taking it ourselves to get rid of pathogens, heavy metals and parasites, causing all kinds of nasty stuff.
I would try the pH and detox approach along with MMS if I were in your position.
Good luck and don't give up on her.