Has your G/F shot before?
If not, peruse the shops and get her a cheapie Bolt action .22 to start out with. Something Like a Remington 510, Savage MKII, or something along those lines.
Buddy of mine thought it wise to teach his girl how to shoot with a Springfield V10 in .45, and a Win 70 in .300 Winmag. She hasn't shot since.
