Quinn was a Praetor and a loyal follower of Darrow. She was Darrow's classmate in House Mars at The Institute. In Golden Son, she was romantically affiliated with Roque.
Quinn was fatally punched by Aja during a failed operation. Her death caused Roque's grief and planted the seed of doubt in him with regards to Darrow's leadership, which subsequently led him to betray Darrow and denounce his cause.