In 2015, Pihan-Kulesza competed at the European Championships in Montpellier, France, where she finished fifth in the all-around competition with a 55.198, as well as fifth in the floor exercise final with a 14.233. A few weeks later, she was set to compete at the 2015 European Games in Baku, but had to withdraw from the competition due to an injury sustained at the Polish Championships. At the 2015 World Championships in Glasgow, she made a few mistakes in the qualifications and did not reach any finals.