When I learned to ride, I was always taught that you are supposed to be on your toes anyway. Being able to flatfoot with two feet promotes poor technique I was told. That said, I don't care a whole lot about my 96 zx6r getting dropped, so I taught my gf to ride on it. (its also my only bike). She got her learners, and in Saskatchewan there's no mandatory lessons. You write a written test and you're legal to go riding with a few rules.
So we go to a parking lot, and her first stop she sets her foot down and ... oh... tipping... tiippppppppping... and as it was falling over I just ran up and yanked her out from underneath. She dusts herself off, I tell her to stand her ground and she tries again. Away she goes. All that story, to remind you that it's going down anyway so put her on a light bike to start and gain confidence. I'll be buying her a 125 or 250 before she's riding on her own. --and she can enrol in a proper course with a real instructor haha.