I bet she's even got Instant Messenger (HA!) and chats with her friends on line. Seriously, Stevie's a pretty good typist, despite the clip on nails she's sporting on tour. Her Mom made her take some business courses (short hand, etc) so that she would always be able to get a practical job and make some money.
Besides, Stevie Mom is very "thrifty." She'd be baggering Stevie about all those long oversea and long distance phone calls while on tour.