I think this is just a beautiful picture of a mother and her daughters, I assume.
Escrava Anastácia, or Anastácia the slave, was an 18th century Brazilian slave. She suffered a brutal existence because she refused to give in to the sexual desires of her master. Much of her life is the subject of folklore and is sometimes depicted with blue eyes. A woman of great beauty, she was muzzled with a mask and often suffered in silence. Today, throughout Brazil, many women wear the mask in public displays in honor of Anastácia as a sysmbol of resistance.
Pictured are Isaac White and Rosina Downs. They both were slave children in New Orleans, and were emancipated in 1864 when General Butler took New Orleans