scoot is a reasonable starting point, but be aware they are a bit twitchy with the short wheel base and small wheels. I don't have a lot of wisdom regarding scooters, I bought one for mom last summer, it was a 2007 sunl 150, and it was 600 iirc. no real issues with it yet. As for the short SO and teaching her to ride, I got mine a 1982 honda 450e on the cheap, and she started practicing clutch control in the yard. Once she started getting the hang of that, I took her up to a local school parking lot and let her practice her maneuverability. She didn't have a lot of time to practice, but she's getting the hang of things. I think this summer she'll be ready for some actual road time. Like yours 4'11, no clutch experience or motorcycle of any kind.