Grace "Gracie" Sheffield is the youngest and arguably most intelligent of the Sheffield children. At the start of the series, Grace was undergoing psychotherapy frequently, but under Fran influence and guidance, she quickly reaches the point where she doesn't need it at all. As a result, however, she has a habit of naming medical conditions and using complicated words that Fran and Maxwell barely understand. This behavior is contrasted by her tendency to pick up some of Fran's faux-Yinglish slang and dressing habits.