This scene is the aftermath of the killing of the 7th great grandmother's son, who was ordered by the plantation mistress to be shot for beating his wife to death. The boy was also the son of the just now died plantation master, gotten by rape when the great grandmother was 13. He was his father's favorite child.
This scene is not in the final version of the movie, in which the art direction and the story itself are significantly different. THE BLUE LADY is on Amazon Instant Video. amazon.com/gp/aw/d/B00XN4KJAG/
The Blue Lady is a story is about what happened the night Master died and the relationship between two slaves in 1830 South Carolina, LaLi, Elizabeth, and The Master's wife, their mistress, Missy.
In this treatment THE BLUE LADY is a revisionist tale about slavery from a female point of view about how three people with a blood connection - The Master, The Master's & LaLi's mulatto son, and Blue, the mother of their grandchildren - wound up dead in the space of a night. At least one of the dead, Blue, was murdered. The Blue Lady finally is the story of how guilt was assigned that night without anyone taking responsibility.
Many thanks to my mentor/reader, Dr. Paul Olson of Lincoln, Nebraska.