RIP.
Cancer is probably one of the worst things out there. Lots of suffering. Even if you get rid of it once, it might get back sooner or later. Reminds me of my days in high school. One of my classmate's mother had cancer for a few times, ended up in the wheelchair, got her leg amputated. Later on, she got cancer again and died. Nobody knew it. My classmate never said anything about it, but someday I randomly found her mother's FB account and obviously she was dead already. Later on my teacher wanted to kick my classmate out, because she never came to school (probably because her mother died and she had more important things to do) and I remember one time after class I went to the teacher and asked him if he knew about her situation. I told him her mother died etc., and then he started to cry. It was such an awkward situation.