therapy lamb

What a modern-day Mary could have called her small fuzzy ovine pet and thus been allowed to bring it to class with her despite its ordinarily being "against the rule".

I'm all for allowing children to keep cute/cuddly pets as calming/encouraging companions to help them through da day; it's just dat allowing Mary to bring her "therapy lamb" into an elementary-school classroom would cause all kinds of issues, of course, since it would be a huge distraction to all of Mary's fellow students, who would naturally all wanna pet and cuddle da silky woolly lamb all day instead of concentrating on their boring lessons.