Sometimes I really think that I may hate my sister.
Seriously? Your own sister? What makes you feel that way?
She's often very annoying and she doesn't do what she is told to do.
You probably shouldn't hate your sister. It is normal for brothers and sisters to fight, but hate is such a strong word. I think maybe you should set an example for her.
I don't want to be a bad influence, methinks. But she's just very annoying.
Being annoying for a sister is fine, and it could be so much worse and more destructive. You need to just realized that she is your family and give her a bit more leeway in how she acts, because most people would expect you not to hate her.