Just tell her that in the Motorcycling World, it's bad Karma to even just sit on another person's bike, unless it's as a passenger, and that if she wants to ride she must get hip to all the unspoken rules..............Then hide the keys as a precaution!
P.S. I think the new CBR is Badass!!!! Tell her that I said congrats.
Talking realistically though, I know exactly what you mean. When Richie got his permit I realized that I had been waiting all these years for him to be old enough to ride with but once he had it I was a nervous wreck worrying about him. That was my flip side.