i taught my wife on a pitbike. its small enough so if she spilled it, it wouldnt hurt her, but it was clutch, and pretty aggressive little thing. let her get super comfortable on it then put her on a ninja 250. shes doing pretty good, uses the bike as a cruiser, not yet good enough to keep up with the big boys, but i would recommend a pit bike. easy to fix, not much to break if its wrecked, and cheap on craigslist. but side note, i know nothing about scooters, im sure i could look at one and tell you whats wrong with it though, but i dont think ive ever seen one up close.