You know, even with all the statements about how short Gura is, I still have doubts that she's THAT short. Seeing that their models were created beforehand, I have trouble believing that they not only manage to recruit someone who perfectly fits the model personality-wise but also physically, and that's implying that they take their physical size into account when filtering their candidates.
I just thought that maybe she is short for an American girl, which would have make her average among Japanese girls.