Read it through once

Wilson was chatting with him when Roxy arrived. He asked her how she could bear to go off chambermaiding and leave her boys; and chaffingly offered to copy off a series of their finger-prints, reaching up to their twelfth year, for her to remember them by; but she sobered in a moment, wondering if he suspected anything; then she said she believed she didn't want them. Wilson said to himself, "The drop of black blood in her is superstitious; she thinks there's some devilry, some witch-business about my glass mystery somewhere; she used to come here with an old horseshoe in her hand; it could have been an accident, but I doubt it."