V.V. Ganeshananthan won two of the world's biggest fiction prizes this year: the U.K. Women's Prize and the Carol Shields Prize for Fiction. Her novel Brotherless Night imagines one Tamil family's experience during the first decade of Sri Lanka's civil war, told through the eyes of a courageous medical student. V.V. speaks to Mattea Roach about the complexities of writing fiction about a real conflict, grappling with authenticity and diasporic storytelling, and her almost 20-year journey working on the novel.