Before the interview, here's some info about her from her website:
Wendy Mass is the New York Times bestselling author of eighteen novels for young people (which have been translated into 20 languages and nominated for 76 state book awards), including A Mango-Shaped Space (which was awarded the Schneider Family Book Award by the American Library Association), Leap Day, the Twice Upon a Time fairy tale series, Every Soul a Star, 11 Birthdays, Heaven Looks a Lot Like the Mall, Jeremy Fink and the Meaning of Life, and Finally, The Candymakers, and 13 Gifts. Her latest books are The Last Present, Pi in the Sky, and a new early reader series called Space Taxi. Wendy wrote the storyline for an episode of the television show Monk, entitled “Mr. Monk Goes to the Theatre,” which aired during the show’s second season. She tells people her hobbies are hiking and photography, but really they’re collecting candy bar wrappers and searching for buried treasure with her metal detector. She lives with her family in New Jersey.