I read this young adult novel in the early 1990s at my local library. It seemed like it was relatively recently published at the time. I believe that it was a first person story, about a teenage girl who is either on Thanksgiving or Christmas break from school. Her parents tell her they are getting divorced, and she starts secretly overeating all of the leftovers from either the Thanksgiving or Christmas meal. She is writing in her journal, feeling isolated, and having some weighty conversations with her parents–particularly her dad, if I remember correctly–all while developing an unhealthy relationship to food. The book ends with her swearing off of the overeating, and taking walks in the snow to lose all of the weight she gained over the holiday vacation.