I have been caring for my mother who was diagnosed with colon cancer 2 years ago. After surgery she received chemo until 2 months ago when she started having headaches. She received radiotherapy to the brain for 10 days and was put on a course of cortisone for this. After the radiotherapy her health deteriorated very quickly, she can no longer walk and although she understands us she no longer speaks. She is 85. Any chance that she may recover or is this the terminal stage?