I want to end my relationship, do you think I should?
Why do you want to end the relationship?
She's sick and she think's I like some other girl, which isn't true.
It's important to do what you can to maintain relationships. However, you shouldn't feel like you need to stay in a relationship if you don't want to.
I don't want to listen to the girls family problems.
You should just talk through your issues. She will get better if she's sick and you can work out the rest of it.