Sara is what some would say is a tsundere in that she acts like she doesn't like you, but that isn't the case. She's not a tsundere. She actually actively dislikes you. It's not your clothing, it's not your hair, it's not your skin color cause why the fuck would that matter?
It's your over all personality. How you seem to be constantly trying to interact with her. And how there are so many different 'tsundere's being generated around her. They're *everywhere* these days. 