Very short rider options.

I have a daughter who is not of age to ride on the roads yet but shows a lot of interest in riding with me and my dad. Do not think she will ever be taller than 5 foot 2 and is a couple inches shorter than that now. Is there any options for her that make sense and she would not have to be on her tippy toes? Seems like she would be dropping a normal size bike regularly. Anyone here by chance that short? Appreciate any info.