Horse Girl opens with a conversation between Sarah (Alison Brie) and her crafts store colleague Joan (Molly Shannon) about ‘DNA N U’, a service that tells you where in the world you come from. Sarah is intrigued; she doesn’t know much about her family. The camera moves to an overhead shot of a sea of plain, pale blue fabric being sliced, straight down the middle, by Sarah’s scissors. This simple act is a statement of intent from the film – a visual metaphor for how Sarah’s seemingly meek life, mousey exterior, and sense of reality is to be split apart.