Charles Spurgeon Commentary 2 Kings 4:21-22

"And she went up and laid him on the bed of the man of God, and shut [the door] upon him, and went out. And she called unto her husband, and said, Send me, I pray thee, one of the servants, and one of the asses, that I may run to the man of God, and come again." — 2 Kings 4:21-22 (ASV)

She did not tell him her errand; she wished to keep the trouble to herself for a while.