I am so sorry to hear this... Hopefully he left enough incriminating evidence in his letters you will be able to get to the bottom of who is responsible. What a invasion of privacy. I don't care if we are on the internet or not it gives NO ONE the right to do this. It is a "INJUSTICE" not matter how you look at it !!!!
To prey on young teenage girls...
You done the right things to protect your daughter!!!! I am so glad you didn't stop with the security guard!!!