It would be a sequel. . . .
And now I've sketched out the high-level outline, the fairy tales she would go through, and am frowning at the conclusion at their wedding. Even though many people think all fairy tales end at the weddings, many fairy tales do. Educating people about how they don't need to should be strictly subordinated to the needs of the story.
On the other hand, the wicked witch is still hanging around. And while many a wicked witch lives past the end of the fairy tale, they can make trouble after the wedding. The problem is that I have a multitude of choices for the tale, and none of them click into place.
Oh, well, outlining time. Maybe it will click by the time I need to know. (Scuttles off, to rename a baby. As a minor character in this novel, the name I gave him sufficed; now he needs the name he's got in the sequel.)