Babs is correct. Height is only one factor that goes into bike fit. Colorado cyclist has a formula on their website to determine correct frame size based on a couple of measurements to be taken.
I would venture to guess that a 53 or 54 would fit her fairly well. Giant doesn't use number sizing, but their Small or Medium sized frame would be what she is after. She's a tweener at 5'8", so it would defintely be a good idea to at least take one out for a spin before committing to anything.
As to your other question - no idea where to get one. I'm 800 miles away. Try Craigs list (after figuring the right size first, of course).
|