I'm not going to talk to a girl with cancer
Why would you not talk to a girl with cancer?
No reason behind it - I'm going to tell her to fuck off.
Just because someone has cancer doesn't mean that you should stop talking to them. This is a time when they might need you the most.
She's got it coming. I don't care if she has dying.
Sometimes you can be upset with people but you shouldn't cut somebody out without a really good reason. Especially if they are suffering from cancer. They need all the support they need.