Strap her on the back of a bicycle built for two, and strap her feet to the peddals. She will at least feel how it is supposed feel when she is peddling. Fix the handle bars to not be able to turn and go down a straight road. I mean its not like she is going to go around the block or anything. She will at least get the sensation of riding a bike and may even rnjoy it. You could see she wanted Piggys fat hands off the bike.