Do you think my action towards her was an effective means of vengeance for her pive-aggressiveness?

There's this girl in my school who really, really hates me. Although she's never explicitly stated so, I know she has deep feelings of disdain towards me. Every time I walk past her in the halls and smile at her, she merely politely smiles in response. One time I said "hi" and she still just grinned and walked off. Otherwise, she never so much as glances in my direction. Her lack of attention to me is a subconscious form of rejection, part of the large-scale agreement among my peers to socially ostracize me for comedic purposes (as well as to prevent my presence from irritating them any further). While we were both in line waiting to speak with the teacher, I felt my fury and my hatred for her very being rise. As she turned and walked away, I grabbed her sleeve and tugged her in front of me. Then I looked her right in the eye and spat in her face. I got sent to the office and received a week's suspension. I hope she knows where things stand, and that I am on the exact same page as her regarding our relations.