"Hang out at the gun range and meet a nice girl that not only shoots, but doesn't lean back when she's on the firing line."
Read more:
http://www.tfproject.org/tfp/tilted-...#ixzz1G0DTQgGp
QFTMFT. Don't try to teach your girlfriend how to shoot. Befriend a female rangemaster, and date her. If you can't or won't do that, have HER teach your girlfriend how to shoot.