MargolinDr. Ellen Margolin is a practicing psychologist in New York City. For over thirty years, she has been dedicated to helping children, teens, and adults overcome emotional challenges that come with life and relationships. She wrote A Big Change for osie with the hope that Rosie's story, told through the eyes of a puppy, will help children and parents better understand and navigate the complicated feelings that come with the not uncommon experience of separation and divorce. Read More Read Less