The other issue here is that of witness. The people of God go through a number of corporate death-and-resurrections right up until the first century (and beyond, of course). Israel was resurrected from the "grave" of Babylon (Ezek. 37) in order to be a witness to the nations, a priesthood working within the Gentile construct set up by God in Daniel.
Israel at this point was not witnessing, epitomized in Mordecai's unfaithful instruction to Esther to hide her faith and her race.
So Esther, like Israel, would be forced to become a bold witness, in order to become not just a wife but a co-regent, a bride who joins her king in calling down the Covenant curses upon their common enemy.
This process is seen in the book of Revelation, but it goes right back to the Garden of Eden. At least, that is what should have happened. The serpent is crushed and the bride sings a song of victory. The bride represents the burial spices on the fragrant resurrection body (Esther's Hebrew name was myrtle, and the beauty treatment she enjoyed was amazing!).
Just so, Jesus, resurrected in the Garden, tells the women to go and witness.