At the 1967 European Rowing Championships in Vichy, Boesler competed with the women's eight and won a silver medal.[6] At the 1968 European Rowing Championships in East Berlin, Boesler won a gold medal with the women's eight.[6] At the 1969 European Rowing Championships in Klagenfurt, the East German women's eight competed its success and retained their European Championship title.[6] The 1970 European Rowing Championships were held in Tata, Hungary, and the East German women's eight became European Champion for the third year running.[6] At the 1971 European Rowing Championships in Copenhagen, Boesler was again part of the women's eight and this time, the team won a silver medal.[6][7] Throughout her rowing career, she started for the Berliner TSC.[8] She retired after the 1972 rowing season and was celebrated alongside other retiring international rowers in May 1973.[9]