She was the only child in the park. I would not leave my 9 you child alone all day. You should get all the facts before lambasting. Hurray for all you folks that went to the moon, biked cross country, etc, while you were left unattended for days. At least you knew how to get home unlike this child.
Did you even bother to read the story, like the part where it said there were about 40 other kids in the park at any given time?