She sounds like a narcissist. I mean, not necessarily in the clinical sense (or maybe so) and I'm not trying to offend anyone who may have NPD but she wanted attention from you and got it and when she didn't get it, it really upset her. Didn't you say she drove by your work a second time trying to see if you were there? Seemed like she was trying to elicit some kind of response from you that she didn't get the first time.

Anyway, I agree with Hamster. Not much you can do at this point. Journaling to get these feelings and talking about it on here are definitely constructive.