Josette's background?

Josette is Cecile's adoptive aunt who steals her off of the street when her father is killed. In the book Josette actually has two sisters, Collette and Louisa. Cecile is closer to them and they raise her instead of Josette. I suppose they were cut from the movie because there were enough characters already. In the brief scene of the Haitian Revolution Josette appears to be well off. We don't see her entire house, but she is well-dressed and seems to have at least one slave who tells her not to go down to the street. She was free before leaving Haiti. The famous "quadroons" technically were not all quadroons as Cecile is half black, not one fourth. At first I wondered if Josette too is half black, having one white and one black parent. The Haitii scene takes place around 1801, I believe. There were people who avoided slavery having been freed by their white planter fathers. However, some broke their promises as Philippe did to Lisette. Cecile's mother was a slave, making her one. If Josette was born into slavery as well, she had to have been freed. I don't know if Free People of Color in Haiti at the time had families that had been free for several generations as they were in New Orleans. In the movie we briefly see a portrait of Josette's mother which she probably commissioned after coming to Louisiana. The book also mentions Josette having gone to Paris as girl with a white lover. I assume she was in a placage since it existed in Haiti also. Perhaps she was conceived during one. I know I put a lot of thought into this, but after reading the book Josette seems like such an interesting character whose past we do not know much about. I would appreciate other theories on her background.