Maybe send a hitman to give her a kneecapping
... well, perhaps a little bit of negative emotion, just to let off steam!
I'm joking, I'm a pacifist.
I'd be heartbroken. But, since I'm not one to waste my time on negative emotions, I'd move on and share my feelings with someone who appreciates me.
I just don't have the heart to hold grudges and hate people.
What if you were at a conference and, after going to the toilet, somebody told you that you had tucked the back of your skirt into the top of your knickers (panties), showing your bottom! ... I've seen this happen.