That's it! What she continued doing, is as good as putting a pistol's barrel in her mouth. The ball's in your court, Pembie! Yeah, don't waste your time replying to her! I suggest, hand those email of harassment over to the police. Let the authorities shut her up!
I'm not sure if reporting of her further behaviour is part of the agent's job. I mean, things doesn't have to turn this ugly but, given what she did (and has been doing), she's itching for it.