Her research, teaching, and clinical expertise focus on the collaboration between education and psychiatry. She has a small private practice in Cambridge, MA that focuses on family therapy and treatment that combines psychopharmacology and individual work. Nancy is the author of The Behavior Code: A Practical Guide to Understanding and Teaching the Most Challenging Students (Harvard Education Press, April 2012), written with behavioral analyst Jessica Minahan, and the memoir In Her Wake: A Child Psychiatrist Explores the Mystery of Her Mother's Suicide (Basic Books, September 2009), winner of the Boston Authors Club's 2010 Julia Ward Howe Prize. She sees her creative endeavors, including writing her play Regeneration, as a powerful narrative tool for healing