“It is as great a crime to leave a woman alone in her agony and deny her relief from her suffering as it is to insist upon dulling the consciousness of a natural mother who desires above all things to be aware of the final reward of her efforts, whose ambition is to be present, in full possession of her senses, when the infant she already adores greets her with its first loud cry and the soft touch of its restless body upon her limbs.”