Tee hee! What would you do here?

Hahahaha....... There is this hella snarky, snotty girl at my school who hates me cause I looked at her like she was an idiot when she was being a Bit** to her friends and everyone else. My approach is to be nothing but kind to her, so that when she finally yells at me (in dramatic teary voice), "But I've been nothing but kind to you. Why are you being so mean? Are you trying to make drama?" Her friends and the rest of the school will take my side and she'll be revealed for the cow she is. I know it will work cause her friends and the rest of the school (Deep breathe) is actually pretty nice. Do you think this is cruel? What would you do. :)