In these tales, stuff just kind of happens, and the narrative voice usually doesn't linger on the events. For instance, when Gretel pushes the witch into the oven, we're told: "The witch began to howl dreadfully, but Gretel ran away, and the godless witch was miserably burned to death" (58). A human being was just incinerated and we only get a one-sentence description of it. No remorse on Gretel's part either.
So yeah. Stuff: it happens. Then more stuff happens. It's a little more exciting than See Jane Run when Jane is running away from a wicked stepmother or incestuous father, but same idea.