sinful

Marilla says it is very sinful.

She had an uneasy feeling that it was rather sinful to set one’s heart so intensely on any human creature as she had set hers on Anne, and perhaps she performed a sort of unconscious penance for this by being stricter and more critical than if the girl had been less dear to her.

But that night, when Marilla went to bed, acutely and miserably conscious that the little gable room at the end of the hall was untenanted by any vivid young life and unstirred by any soft breathing, she buried her face in her pillow, and wept for her girl in a passion of sobs that appalled her when she grew calm enough to reflect how very wicked it must be to take on so about a sinful fellow creature.