Check out the Recreational and Family Forum at this site: https://www.bikeforums.net/recreational-family/ This question has come up before many times. You may find an answer there.

I recently ran across a garage sale where they had a small frame Trek woman's bike for sale. I had no idea it was made for a woman from looking at the bike. It was priced at $75 which was a pretty good price for a bike that retailed for a couple hundred dollars about five years earlier. When I looked it up online I realized it was designated that way. Although a bit heavy at 30 pounds, it would have been a good bike for a smaller child around 5' in height. Way better than the crap sold by mass merchandisers.