I was 12 when my mum was diagnosed with cancer. She collapsed and was rushed to hospital with the paramedics thinking it was a slipped disk. When we were told it was cancer, it was quite hard hitting (as it would be in any situation) The thing is... my mum died 8 months later as they had caught it too late but me being so young at the time, didn't relises that there could have been consiquences like there was. I argued with my mum so many time, and ignored her when she asked me to do something (because I didn't understand) 6 years on & now I am 18, I really wish I could turn back time. I wondered why, that because she couldn't walk as well as she used to, I treated her any differently. Now that I am 18, I have been advised to go to the doctors and get scans and tests to see if I also have cancer so it can be caugh it in the earliest of stages (I would advise you to go the the doctors and ask to get tested regularly because it does run in your family) All I can say is don't let little problems ruine your relationship & alway live life to the full because you never know whats round the corner. (My thoughts are with you, your mum & family at this hard time. If she see's you being stong and possitive for her, she will do the same. Don't be afraid to have fun at this time too!