Isabel and Zoë are favorite friends --- most of the time. They have side-by-side cubbies at school. They never take off their friendship bracelets. And they make each other laugh like nobody else. But some of the time, Isabel isn't Zoë's favorite friend at all. Because some of the time, the fun things they do end in a no-fun way. Like how they've been sent to the principal's office because of Isabel's shenanigans with some kindergartners. Now Zoë is mad at Isabel, and Isabel is miserable. Isabel is trying everything to win her friend back. Will getting a new puppy help Isabel mend her friendship with Zoë? In this first title of the chapter book series for emerging readers, author Caroline Adderson introduces the inimitable Isabel and how she came to have her lovable dog, Rollo. Short chapters, spot-on humor and engaging illustrations on every spread make this series a perfect pick for both independent reading and read-alouds. Highly entertaining and fun, it also showcases the personal growth and development of the main character, while touching on subjects of interest to elementary-age children: relationships with friends, the responsibilities of having pets and family situations of all kinds, including how Isabel, who lives with her single mother and a nanny, loves the story of her adoption (and its similarities to their adoption of the dog).