Who is Sini from The Upstairs Room and what is their importance? The_Upstairs_Room English & Literature Sini | The Upstairs Room

Sini is Annie's older sister. When they are forced to go into hiding, Sini is nineteen-years-old. Sini takes care of Annie, a parental role that often strains their relationship. While Sini keeps after Annie to do her math work and exercise, she, herself, is completely focused on her looks. Sini resents being locked away and feels she is missing out on youthful adventure.... parties, dating, and enjoying time with friends. Over time, she decides that she has had enough and takes a job as a as maid, using fake papers. When the war is over, she avoids going home because she has a boyfriend that she started dating while working as a maid. Annie comments on her beauty.