In 2010, Kaplan reached the final of the European Pool Championships in ten-ball, finishing as runner-up behind Jasmin Ouschan. In the Women's Euro Tour, Kaplan won events in 2013, 2014, and 2017 and finished three times as a runner-up. Kaplan is third on the all-time list of winners in the tour, behind Ouschan and Kristina Tkach with a total of 12 medals from the events. Kaplan also promotes pool events, usually women's events. She is married to fellow German pool player Jörn Kaplan. They share a professional pool club, where she was the first woman to play in the highest tier of German club pool, the .
