Melanie is Cassandra's loving mother, who took over her from a box delivered to Grandpa Larry and Grandpa Wayne. In If You're Reading This, It's Too Late, Cass had discovered her own birth certificate and found out at the end of the book that she was adopted by Melanie. In the following book, This Book Is Not Good For You, she discovers the yellow box she was delivered in, including a letter from William Wilton Wallace III, Larry and Wayne's accountant at the time. Willliam Wilton Wallace III is not Cass's father.