The real life aspect is greatly shown through because Lilly Martin Spencer actually used her family as models. The painting is as natural as a photograph, especially in "Kiss Me and You'll Kiss the 'Lasses" (1856). Which also has a darker background, with the woman standing out, cooking.
This image caught my attention because of the practical aspect of 19th century domestic "responsibilities." It really shows how hard women worked, yet it shows her in a nice blue dress, which is what women would have chosen to wear while cooking/cleaning house.