Ryan,
I never stated that nurture isn’t important and that some physiological changes can happen with improved nutrition etc. However, these does not necessarily imply changes are occurring at the genetic level, and adds nothing to support the notion that simply adding protein to the diet can boost the height of a growing child by a foot. As Callam pointed out, you seemed to have helped the girl improve her 400m times over the course of four years and undoubtedly she is much more fit and healthy than she might be had she not run track, but there is no way you will ever convince me she is a foot taller than she would have been had she been raised in China and not running track. Again, can you tell us how tall she is now?