C. F. Keil and Franz Delitzsch on 1 Samuel 1:18

1Sa 1:18

Hannah then went her way, saying, “Let thine handmaid find grace in thine eyes,” i.e., let me be honoured with thy favour and thine intercession, and was strengthened and comforted by the word of the high priest, which assured her that her prayer would be heard by God; and she did eat, “and her countenance was no more,” sc., troubled and sad, as it had been before. This may be readily supplied from the context, through which the word countenance (פּנים) acquires the sense of a troubled countenance, as in Job 9:27.