what is a 9yr old

a) doing on the phone and
b) speaking like that.
Bit harsh!
a) I'd be surprised if a 9yo didn't know how to use a phone?!?
b) All you need to do is catch a train or walk down a busy street to learn those words, sadly.

The thing that intrigues me is the motivation behind the conversation. Why is this girl so angry? Why can she not express herself properly? Your poor DD - I hope she understands that she is not the problem and doesn't take those words on board.