The story so far:
…She glared hatefully at her step-mother and her step-sisters. She left the house with her Prince and they were married.
The step-sisters and her step-mother lived in the palace with Cinderella, but not as family. They became maids and the Prince made sure they endured the same cruelties as they ad bestowed on Cinderella while she had been in their care.
Everyone lived happily ever after???