Sidorova was the alternate for the Russian team at the 2018 Worlds, where the Russian team would take home the bronze medal. Sidorova represented Russia at three legs of the 2018–19 Curling World Cup. In the first leg she went 3-3, at the third leg she went 4-2 just missing the final by one point. At the Grand Final, she went 4-2 once again just missing the final.