Read it through once

She stepped over and glanced at the other infant; she flung a glance back at her own; then one more at the heir of the house. Now a strange light dawned in her eyes, and in a moment she was lost in thought. She seemed in a trance; when she came out of it she muttered, "When I 'uz a-washin' 'em in de tub, yistiddy, his own pappy asked me which of 'em was his'n."