Gwen Cummings is a fictional character from the 2003 film Girl, Interrupted. She is portrayed by actress Winona Ryder and is depicted as a young woman struggling with mental health issues. The film is based on the memoir of the same name by Susanna Kaysen, which explores themes of identity, mental illness, and the experiences of women in a psychiatric hospital. In the film, Gwen is characterized by her rebellious spirit and complex personality. Her interactions with other characters, including Lisa and Susanna, highlight the challenges of coping with mental health and the journey toward self-acceptance. Gwen's story serves as a poignant reflection on the struggles many face in understanding themselves and their place in the world.