Take her for a holiday to a nice warm country with little to no traffic and suggest taking a scooter to explore some spots. Nice things to look at and keep her mind off what she's doing. Also, less intimidating to ride a 50cc scooter but, provides 2 up riding to start.
You can bribe her with the trip and shopping and of course, relaxing. Then ease in some site seeing.........
Follow up with the do you remember that trip? Great time, well want to take a little trip locally on the Sporty? Just might do the trick.
Just my 2 cents.
Good luck!