Evil-stepsister Stories

The prince of the land is holding five balls, one each night. On the last, he will choose someone to be his bride. One lady attends for a different reason. But when the prince starts to notice her, she tries to back away, to keep her identity a secret from those who would mock. Such as an evil stepsister. ~~~~~ Disclaimer: I don't think I was inspired by any book/series in particular, just tossing some ideas around and stumbled on a fun one. Enjoy.