As to his cousin, she wept with all her might, aghast at the mischief she had done: though she said nothing.
He, poor man, was perfectly aghast at the spectacle of Catherine seated on the same bench with Hareton Earnshaw, leaning her hand on his shoulder; and confounded at his favourite’s endurance of her proximity: it affected him too deeply to allow an observation on the subject that night.
There are no more uses of "aghast" in the book.
Show samples from other sources
She stepped back aghast at the behavior.
Her employer looked aghast and fired her on the spot.