But what do you want OP to do? Print the conversations and paste it through the city? Email them to her parents? Shame her to every friend? I'll be extremely childish, that's not how decent people act.
That's what i don't understand, people act like this is a crime that should be harshly punished to no end, why not throw stones at her like they do in some cultures?
She screwed up, he doesn't want to be with her anymore and it's taking the necessary actions to it. That's it.
She'll be alone, without a place to live, without furniture, without a dog (maybe), and without someone with whom she spent the last 4 years to have her back. I think that's a just punishment for her.