She is (indirectly) featured as his actual sister (both are played by the same actor, Günter Meisner).
Angela Hitler, married name Angela Raubal, (1883 − 1949), half-sister of Adolf Hitler
Adolf Hitler | Hitler | Angela Merkel | Hitler Youth | Angela Lansbury | Angela Davis | Angela Carter | Angela Mao | Angela Bassett | Angela | Hitler's | Angela's Ashes | Angela Eagle | Hitler's Priestess | Angela Cannings | Angela Brown | Angela Winbush | Angela Knight | Hitler's Willing Executioners | Berghof (Hitler) | Angela Sarafyan | Angela Constance | Angela Burdett-Coutts, 1st Baroness Burdett-Coutts | Angela Bettis | Hitler: The Rise of Evil | Hitler: The Last Ten Days | Hitler's Pope | Angela Visser | Angela Slatter | Angela Rippon |
Geli Raubal, full name Angela Raubal, (1908 − 1931), daughter of Leo and Angela (Hitler) Raubal and possible lover of her mother's half brother, Adolf Hitler