I am so sorry to hear about your mum, this must be so hard for you and your family. We are going through Bowel cancer with my dad at the moment, and i understand your rollercoaster of emotions. I cried lining up in the supermarket line the other day - totally unexpected !! Just burst into tears and had to leave. I feel like i have no control over how i am going to be feeling from one day to the next.. this really is one of the hardest things to deal with when it's someone you are so close to. Just remember what a supportive, great daughter you are being, by just being there for your mum, i know you probably don't feel like it's enough - but i'm sure she is so grateful to have you by her side !! I know my dad is, i call him everyday just to let him know that i am thinking of him and i'm there for him. Take each day as it comes,and cherish every moment you have with your mum... my thoughts are with you and i wish you all the best.
Paula. x