((skeeweeaka))))))))))
It is so hard for kids online. Its very hard to tell who is who.
Kids need to be protected from the internet.
It sounds as if you are doing the correct things.
There are many links out there for you and your daughter.
I do think the e mails she recieved were unacceptable
There are laws for those if it came from a older person.
There are also some online laws for bulling ... if she needs them
http://www.fbi.gov/publications/pguide/pguidee.htm

http://www.wiredsafety.org/

http://www.multistalkervictims.org/

good luck and be safe you and your daughter
Muffy