Esther 2:10, 17, 20

Esther had not told anyone of her nationality and family background, because Mordecai had directed her not to do so.

And the king loved Esther more than any of the other young women. He was so delighted with her that he set the royal crown on her head and declared her queen instead of Vashti.

Esther continued to keep her family background and nationality a secret. She was still following Mordecai’s directions, just as she did when she lived in his home.