Kids are expected not to break the law.
Hilda was jealous that her sister Rosa always got more candy than she did.
Hilda wanted to get more candy then Rosa.
Hilda puts lots of effort into a Halloween costume and tries to run quickly to more houses.
Hilda takes candy from a candy store, so she has more than Rosa, it works, so she keeps doing it.
Hilda just barely gets more candy than Rosa did that day.
The candy store eventually goes broke from rampant theft and now neither of them have candy.