I Want To Expose Her; Am I Narcissist Now?

I'm in a stage that whenever I see her in a public place, i want to expose her or confront her, "Wow? You can sleep after what you've done to me?". I am mad seeing her, I want to expose her to the world 'til I see her ruined. This is the reason why it makes me think that I am a narcissist. I am happy that I now escaped from her but it's eating me alive seeing her around our university.

What should I do? And what's happening to me?