Factual error: In the final scene where Solomon was reunited with his family, the doors he entered the room through had Edwardian style leadlight glass. The movie was set about 50 years before this style.
Continuity mistake: A man falls back into mud, in the pig pen. But his back is clean.
Factual error: In the close-up of the violin being strung, it is obvious the strings are of contemporary origin. You can see they are translucent plastic; not exactly historically accurate.
Continuity mistake: Towards the end while Mr. Parker speaks with Epps about Solomon's freedom the sun changes between shots.
Continuity mistake: When Platt is putting clapboards on the frame, after Tibeats tells him to make them flush he has one nail in the center of a plank when he sees Patsey being pulled out of another building. He takes his hand off the plank and watches. The plank is at three different angles depending on the shot, although Platt is standing several feet away and has not touched it again. (00:45:00)
Answer: It was a fellow slave. As to whether or not she has a greater role in the book I can't say, but I interpreted the scene to demonstrate how far removed from his former life Solomon had fallen; rutting on the floor in front of everyone else like an animal.
Phixius ★