Can coarctation of the aorta cause poor growth in height?

Possible but... It certainly could, though growth retardation is not a classic side effect. Hypertension is most common in older individuals (after infancy, but including children). Slow growth only is not likely related.
Coarctation. Anything affecting a major organ system can affect growth. The major association between coarctation and growth in females is turner syndrome. Make sure your doctor rules this out.
Is related. Well, there is a syndrome called turner's syndrome which is congenital and two of the features are short stature and coarctation of the aorta. However, to my knowlege, the coarctation does not cause the short stature, they are just related. I know of no especial association where the coarctation causes the short stature.