[1] She held three German senior titles in her own division, picked up a total of twenty-nine medals in her career, including a bronze from the 2000 European Judo Championships in Wrocław, Poland, and represented Germany in two editions of the Olympic Games (2000 and 2004).

[2] Kuhnen also trained as a full-fledged member of the judo squad for the Berlin Sports Club under her personal coach and sensei Norbert Littkoff, who also headed the German national team.

She thwarted Gabon's Mélanie Engoang in a sudden-death prelim match, before falling short in her next bout to South Korea's Lee So-yeon, who threw her off the tatami with a double yuko score within four seconds.

[5][6] At the 2004 Summer Olympics in Athens, Kuhnen qualified for her second German squad again in the women's half-heavyweight class (78 kg), by placing seventh from the World Championships in Osaka, Japan.

[7][8] Unlike her previous Olympics, Kuhnen received a bye in the first round, but slipped her medal chances with a shido penalty, a yuko score, and a kuchiki taoshi hold (single leg takedown) from Cuban judoka and eventual bronze medalist Yurisel Laborde during their second-round match.