What fairy tale does Elfine's debut at the dance seem most like?

When Elfine and Flora arrive at the ball, they greet Richard's mother and his sister, Joan. Mrs. Hawk-Monitor is rather startled by Elfine's change of appearance. Flora and her entourage descend the stairs just as a waltz is ending. As Flora hoped, Dick is agog on seeing Elfine. Flora is especially pleased and smug when she watches them dance and hears many praises about Elfine's beauty. This is what might be called Elfine's "cinderella" story where she sneaks away from the wicked, or in this case, controlling Stepmother (Elfine's grandmother, Aunt Ada Doom) and meets the handsome prince (Richard Hawk-Monitor) who falls in love with her. Of course, just like Cinderella, there is still an accounting when Elfine returns home.