Esther 2:20

2:20 Esther was still not divulging her lineage or her people, just as Mordecai had instructed her. Esther continued to do whatever Mordecai said, just as she had done when he was raising her.

Esther 4:5

4:5 So Esther called for Hathach, one of the king’s eunuchs who had been placed at her service, and instructed him to find out the cause and reason for Mordecai’s behavior.