At the
2023 European U23 Wrestling Championships held in
Bucharest, Romania, Demirhan won the bronze medal in the women's freestyle 50 kg event by defeating Poland's Amanda Tomczyk 6–1 in the bronze medal match. She advanced to the semi-finals after defeating Ukraine's Snizhana Onufriieva by technical superiority, 10–0, in the opening round and Finland's Taru Vainionpää 3–0 in the quarter-finals. She then lost 8–0 to France's Emma Luttenauer in the semi-finals. She won the silver medal at the
2024 European U23 Wrestling Championships in
Baku. Demirhan also won bronze medals at the
2021 World Junior Wrestling Championships in
Ufa and the
2021 European Juniors Wrestling Championships in
Dortmund. == References ==