My son is 6, going to be 7 in a few months. He just learned how to ride his bike w/o training wheels about 4 months ago. We had bought him a "dirt bike" looking bike, it is bigger than the littliest one you can buy, however, he was having such a hard time, it was too big for him and he found it hard to find his balance so far from the gound. Our neighbor boy had a little Spiderman two-wheeler and they let our son use it, we took off the training wheels and he was riding within a few hours! I know it sucks that you will have to buy her a new bike once she grows, but, really the littliest ine is the best to learn on!