in Buy/Sell and Lost/Found

A friend is looking for a bike for her daughter. Something like a small hardtail is probably right. Maybe something urban? What do you have?

Hey while you're at it, what do you have in a medium hard tail? Maybe that would work for my son, and then we could pass his current bike along.

How small is small? 

If it helps, I have a beat down 19" frame that anyone could have.

I mean size small. She's about 5'4".