Hello, let me start by telling you how sorry I am. I went through it with my Grandfather, yes he had breast cancer. I took him to all his chemo and bone scans and I know how hard it can be. The best thing you and your family can do is help her go with diganty. My family and I all at my grandfathers bedside all talked to him, he was on a vent at the time and told him it was o.k. to let go. I know it is the hardest thing to do, but trust me it will make it so much easier on her, to know you all had a great life with her and it is o.k. to let go, tell her you will be with her again and just help her to feel like it is o.k. to die. If you dont sometimes they try to hard to hold on and often times it is more painfull, physically on the patient and emotionally on the family. Hope I was of some help, and again I am so very sorry.