The King of Elfland's Daughter by Lord Dunsany

Next morning Alveric came up the tower to the witch Ziroonderel, weary and frantic from searching all night long in strange places for Lirazel. All night he had tried to guess what fancy had beckoned her out and whither it might have led her; he had searched by the stream by which she had prayed to the stones, and the pool where she prayed to the stars; he had called her name up every tower, and had called it wide in the dark, and had had no answer but echo; and so he had come at last to the witch Ziroonderel.

"Whither? " he said, saying no more than that, that the boy might not know his fears. Yet Orion knew.