This is not how I remember Cinderella, there are two step-sisters (I think they are step-sisters, at least?), but I don't remember that they had Cinderella sold into slavery, I remember she was basically made into their personal household slave instead. And In Cinderella, the Father wasn't the one that brought the two step-sisters into the picture, it was the mother. And the Father was also not alive, but dead, but in this version both parents are alive.