Mum Hasn't Got Long Left....

My mum hasn't got long left and I'm just wondering what it's like to loose someone close to you like that. I'm only 16 and have loads going on, I try to make her proud. I was in the Islington tribune twice for my cancer work and she's so pleased but I'm scared that one day soon I won't be able to here her appreciation or remember her sweet voice, please help me xxx