Esther had not yet showed, etc. This is inserted to account for the humble position still occupied by Mordecai. In the East a person's relations usually rise with him; and the reader would naturally expect that when Esther was once queen, Mordecai would have become rich and great.
Esther's silence accounts for Mordecai's low estate; Mordecai's command (see verse 10) accounts for Esther's silence. For Esther did the commandment of Mordecai. The royal dignity did not change Esther's heart.
She was still the dutiful child she had been so many years. Mordecai had forbidden her to tell her kindred; he had not removed his prohibition, so she had kept silence.