my wife has stage 4 breast cancer that is now in the lymph nodes,bone,lungs and brain. she is in denial and angry, gone through surgeries and lots of chemo. now wants to stop chemo. gets wild headaches, entire body hurts. having problems keeping food down, tired and sleeps a lot .she was diagnosed march 2009 but had symptoms earlier. how long can she live with aggressive tumors throught her body . specialy her brain??