 At the [[2017–18 UEFA Women's Champions League qualifying round]], she was the referee in the matches [[Stjarnan women's football|Stjarnan]] against [[ŽFK Istatov]] in [[Osijek]], Croatia on 25 August, and between [[ŽFK Istatov]] and [[Klaksvíkar Ítróttarfelag (women)|Klaksvíkar Ítróttarfelag]] in [[Vinkovci]], Croatia pn 28 August 2018.In 2018, she served as referee ffurther in the [[2018–19 UEFA Women's Champions League knockout phase#Round of 32|Round of 32 match at the 2018–19 UEFA Women's Champions League knockout phase]] between [[AFC Ajax Vrouwen]] and [[AC Sparta Praha (women)|AC Sparta Praha]] in [[Duivendrecht]], Netherlands on 12 September.She officiated the [[2019–20 UEFA Women's Champions League knockout phase#Round of 32|Round of 32 match at the 2019–20 UEFA Women's Champions League]] between [[VfL Wolfsburg (women)|VfL Wolfsburg]] and [[KFF Mitrovica]] in [[Wolfsburg]], Germany on 25 September 2019, and the [[UEFA Women's Euro 2021 qualifying]] competition [[UEFA Women's Euro 2021 qualifying Group F|Group F]] match between [[Hungary women's national football team|Hungary]] and [[Sweden women's national football team|Sweden]] in [[Miskolc]], Hungary on 4 October, as well as the [[UEFA Women's Euro 2021 qualifying Group C|Group C]] match between [[Norway women's national football team|Norway]] and [[Northern Ireland women's national football team|Northern Ireland]] in [[Stavanger]], Norway on 8 November 2019, Özçelik was the referee of the friendliy match between [[Turkey women's national football team|Turkey]] and [[Ukraine women's national football team|Ukraine]] in [[Menemen]], Turkey on 11 November 2019.