Suggest Treatment For Recurrent Cancerous Cells In The Face

My mother has cancer that started in her tear glad causing her to loose her eye. She had cancer in most of her lymphnodes and other ares in her face when she had two surgeries to remove the cancer.the healing process took a long time to heal enough in order to have radiation,after two weeks of radiation, then later for the scan it apeared to be gone. A few months later a larger area around the flap that got very puffy with fuid, a biopsy prooved that the cancer was still there. More radiation but little knots that look like blisters started popping up in several parts of her face and spreading more radiation and more blister bumps.it has come to the point that Doctors aren t giving her much time, my question is the cancer coming through, we dont know exactly what to expect when it surfaces, are ther pictures that we can see or find to help us know when it is happening, My sibblings and I are very worried about it!