Queen Esther had an emergency: to answer the challenge of Mordecai. She who had been placed in the palace on flowery beds of ease had not succumbed to the luxury of her surroundings. She chose a course at terrible danger to herself for the sake of her opposed people, the Jews.
There is one thing to do always. Do what is right and leave the rest to God. God prepares people for emergencies. Failure is not sin; faithlessness is. (H.C.Mears)
"And who knows but that you have come to royal position for such a time as this?" (Esther 4:14)