When the king's command and edict had been proclaimed, many young women gathered at the citadel of Susa under the care of Hegai. Esther was also taken to the palace and placed under the care of Hegai, the custodian of the women.

Esther 2:3
and let the king appoint commissioners in each province of his kingdom to assemble all the beautiful young women into the harem at the citadel of Susa. Let them be placed under the care of Hegai, the king's eunuch in charge of the women, and let them be given beauty treatments.

Esther 2:15
Now Esther was the daughter of Abihail, the uncle from whom Mordecai had adopted her as his own daughter. And when it was her turn to go to the king, she did not ask for anything except what Hegai, the king's trusted official in charge of the harem, had advised. And Esther found favor in the eyes of everyone who saw her.

Daniel 8:2
And in the vision I saw myself in the citadel of Susa, in the province of Elam. I saw in the vision that I was beside the Ulai Canal.

So it came to pass, when the king's commandment and his decree was heard, and when many maidens were gathered together to Shushan the palace, to the custody of Hegai, that Esther was brought also to the king's house, to the custody of Hegai, keeper of the women.