I know this is variable by DC, depending on height, leg length, and other factors but I'm wondering between what ages kids typically fit on a 12" bike. I'd like to do a balance bike conversion for DD and used 12" bikes are so much more available than used 10" bikes (which all seem to be horrible Barbie bikes and the like). She is admittedly a shrimp so I guess this is wishful thinking but I'd love to hear from enablers