I am going to try and make a harsh comment towards my sister.
What is your reason for wanting to make a harsh comment anyway?
My sister always tells me how bad I am, so I'm considering making a comment to her that ruins her happiness.
Sisters can be annoying but it is okay to let them know that they are being rude. It might cause more fights but you have to stand up for yourself.
Nah, I'm going to hurt her.
Well instead of violence, you are probably better off just letting her know how you feel. Violence will not solve any issue for the long term really.