get her to tell her parents. same thing happened to be, this guy was a friend of a friend, i met him at a birthday party. i was nice to him, as in not leading him on but just being polite. he obviously thought i meant something else, he got my number of one of my friends saying i had said it was ok, not thinking twice about it and knowing i had met him she didnt think twice about it. after that he harrased me in every way possible. turbned up to places i regularly went for lunch etc rang me at stupidly early hours of the morning, i tried to ignore it but he took it too far one day when he rag me crying saying he had just taken an overdose because i 'refused to love him'. i freaked and told my parents, they were angry at first etc as they thought i must have led him on or something (which i cab assure you i didnt) but after that they sorted it right out. they talked to his parents, they in turn made him apologise for all the grief he gave me and never to bother me again. and he hasnt. they were honestly the worst couple of months in my life, i know exactly what she must be going through. tell her to tell her parents, might be scary to do so but honestly its the only thing to do before he takes it too far and does something...drastic.