What is the moral of Cinderella?
The original question had to be edited. I think that the moral of "Cinderella" is one that applies to both the victim and the perpetrators. On one hand, those who subject Cinderella to the harshest of treatments experience a transformation in their own understanding. The step- child who is mistreated and the object of their scorn becomes the Princess. She becomes the vision that entrances the Prince. Despite the fact that Cinderella's other sisters wanted the Prince's attention, the cast- off is the person who garners it. This is a moral or lesson to those who wish to use exclusion and isolation as a way to establish superiority.
There is a moral for those who are like Cinderella in their own life. Cinderella is never given a chance by anyone. Yet, when she is fortunate enough to experience her own moment, it is a reminder that there can be hope even for the most hopeless of individuals. Cinderella is deprived of everything. Yet, she is able to understand that hope is a universal quality and something that can never perish. Her ability to go the ball in elegant best and be sought out by the Prince is a reflection of this. While it is a fairy tale, the moral of hope to the hopeless, power to the powerless, becomes a moral for those who identify themselves with Cinderella.
Certainly, one moral of this fairy tale is that being cruel, like Cinderella's step-sisters, doesn't pay; it is better to be kind to people, like Cinderella. The wicked step-sisters not only mutilate themselves in an attempt to secure the prince, but they both end up blind, their eyes getting pecked out by Cinderella's birds on her wedding day. They end up sightless and miserable while she becomes a princess.
Furthermore, good things come to those who are deserving. Cinderella is dutiful and obedient, and she remains loyal to her dead mother, vising the grave so often, being kind enough that the animals all want to come and help her, and so forth. When she asks the tree to cover her with silver and gold, each time, a more beautiful dress falls from above.