A letter: Könnten Sie bitte meinen Text korrigieren. Danke

Dear Agony Aunt,
I have a big problem.
It is about my grandma. My grandma is very ill and last weekend she was knock out. My mum found she after one day and brang she into the hospital. Now my grandma lie in the hospital. After one week she didn`t wake up. The doctor told us that she have to die. He is`nt sure, but it looks like. I don`t want that grandma die. I really love her. she is as my mum. After school I came always to her, because my mum worked. We had project that we will make cookies at christmas. But she will die. I`m really sad and without her my life will be very difficult. Now I sit next to my grandma and she looks not good. How are my life without her? What do you think?
Best wishes, Lukas