Focusing on not the main character of a story and rather a supporting role in a play, I see Cosette from Les Miserables (with the play plot, not the book) as a type or Cinderella fairy tale.  Her father leaves her mother, and then her mom is forced to send Cosette away because she ccosette-eyesan’t care for her.  Cosette ends up staying with the Thenardiers, a rowdy, corrupt, dirty family that owns a bar and makes Cosette do all the cleaning and dirty work; making them her step-family in relation to Cinderella.  Cosette  sings and dreams of her mother; and a “castle on a cloud,” just like the typical Cinderella tends to have a very active imagination.
Her fairy-godmother could be seen as Jean Valjean, who is the main character in Les Mis.  He knew and cared for Cosette’s mother, and when she died, Jean Valjean vows to find and care for Cosette.  So he provides a way out of the abusive life for Cosette.  Her prince charming comes in the character of Marius, who is an aristocrat that joined the revolution (this story takes place in France during their revolution).  He is able to finally completely lift Cosette out of the life her mother lived and she was headed toward  living, and provide riches, happiness, and yes, even love.
There are so many other tidbits in Les Mis that can parallel or represent aspects of Cinderella, such as the Thenardiers’ daughter Eponine (Cosettes’ “step-sister”?), who is in love with Marius and jealous of Cosette.
Cosette is in the perfect typical Cinderella place of being helpless, jaded, naive, and of course beautiful just as her mother.  Her prince is not only an idealist and passionate about his role in the revolition, but a very rich, society-man.  Ta-da, another Cinderella story!