I think you may need to relax a little. How old is your daughter?
After a quick search I failed to find much related specifically on your needs, however I came across one study (Loko, Aule, Sikkut, & Stamm, 2001) that tested boys and girls aged 8-11 (dividing into 3 height groups) for running speed, explosive strength, power, coordination, and anaerobic endurance. Annual differences were found in all groups; however improvements in tall medium and short groups were similar. In other words height is not necessarily a determinant for coordination.
Have you considered individual differences (Schmidt & Wriseberg, 2000), i.e. some kids will develop motor skills (coordination) quicker than others full stop, no height just individual differences.
General observations may tell you that yes a lot of "bigs" we coach struggle with some stuff, however is this because they are big or a function of the environment? Consider this, generally if a kid is big they are recruited even though they have not had crucial early teaching, this may be why the child is "behind" they are starting later. Secondly generally we ask different things of our bigs (if she is an older junior) and this may contribute to what she can and can't do, as she again has not had the same training.
Lastly height has been shown to be a key determinant for success in many sports (Norton, Olds, Olive, & Craig, 2004). Basketball is an open upper end optimisation sport, i.e. larger athletes have an advantage.
Values from Australian elite basketball athletes (DASET, 1992) indicate the following heights for females shown as:
Average height ± Standard deviation (Australian percentile)
General population 164.8 ± 8.50
Centres 189.8 ± 6.40 (9.2)
Forwards 185.0 ± 7.80 (21.0)
Guards 171.9 ± 6.10 (60.9)
Now given that secular trends in Australia are about two cm per decade (Source eludes me), i.e. the average height is increasing by this margin. This means your daughter is a good height of an average forward at the elite level.
In summary training will be more important than her actual height, although in general for basketball tall is good.
On a more personal note relax and let your daughter have fun rather than try to "fill her head" with anything. Yes she can train hard and try and be her best too, but make sure she enjoys it. If you really are a parent with this situation and are reading any of my post, I hope it was this last point.
