It worked.
Not enough for a full fall, but enough to watch him struggle. He had learned his lesson, it seemed, seeing as he did not squeal for her help instantly. Oops. She declared with faux innocence, yet the look on her face was entirely neutral. Sorry, I'm just really rude.
Now would come the best part. Where she would leave him behind to fend for himself on that snowy edge. Something about it reminded her deeply of her sister. Then the overwhelming thought that everybody should suffer like she did. Let there be another brother or sister of this boy who missed him when he was gone.
She'd turn her path northeast and let her anger be her compass.