I hate my little sister
Why do you feel hate toward your little sister?
I strongly dislike her, I don't want to listen to her shit
Family relationships are hard because we are together a lot. It is important to try to get along with family and try to avoid actively hating them.
It's fine, I can't blame her because I'm a cunt anyway.
If you feel that strongly but don't feel like you can say anything it might be best to talk to someone. Perhaps some professional help to get you though these feelings? This will help you avoid any potential outbursts against your sister in the future.