Do you know the parents of this kid? If so I would call them and threaten to report their son for soliciting child porn. They have actually pursued police action against these kid even if they are underage too. Don't let this creep go on to do this to other, more vulnerable girls.
As much as I'd love to go after this kid there are um problems. First H is a cop. Second my relationship with D14 is not yet on stable ground. Reporting this would absolutely blow up her world and she doesn't need that right now.