I have read your message and I started crying because I know exactly what you are feeling. My mother had breast cancer 9 years agowhen I was 15 , but she make it, she is now well, recovered. But after that my aunt , who was like a mother to me was diagnosticated with breast cancer too and she refused the surgery. After a while another relatice, an uncle, was diagnosticated with lung cancer. The doctors told us he will dye after 6 months because this type of cancer is very rush. But, he is alive in the present . My aunt died one year ago and I want to tell you something.
I know how are you feeling. I was maybe the only one from my family who I suffered very much after my aunt's death because i am very sensitive person and because she was special for me. The others thought she had luck for dyeing so easily( which by the way I read about your mother).
I dreamt my aunt many times, and she told me she is fine, happy now, and that she will always love and help me. You might think these are foolishness, but I have you that message because now, after a year I know that the love ones do not leave us completely. You will see in the future that you will feel your mother's presence or help, and you will start not to suffer so much. It will be hard but the most important thing is that you believe she is outhere , only that you cannot see.
I wish all the best and please try to take any advice in your help and try not to suffer too much( I know this is hard, and it will pass a period but after that, even when you will cry or suffer, somewhere in your mind to be certain that your mother is not completely dead, at least not for you.