The Sheep in Wolf's Clothing

Ewetopia the sheep thinks she has finally hit upon the costume that will get her noticed at the Woolyones Costume Ball: she'll come dressed as a wolf. Unfortunately, this doesn't earn her any points with the rest of the sheep, who find such a thing in rather poor taste. And yet, in this topsy-turvy fairytale for readers 6 to 8, Ewetopia does find a dance partner in a tall, attractive sheep at the ball — but why would a sheep come dressed as a sheep? And why does he keep calling her «Mom?»