LOL, yes, it could've been one of the first books Cass read after learning how to read after her ESL course or whatever. But oh wait, Alfred helped tutor her, right? He probably dug out Dick's old kid's books and found Babysitter's club. (And the reason why Dick finally had a change of heart after all their RAWR FIGHTING was because he saw one of the books poking out of one of her utility belt pouches. After all, how could he stay mad at someone who shared his love of those books?)