Jaschina started at the beginning of the 2007/08 season in Krasnogorsk for the first time in the cross-country skiing Eastern Europe Cup and came 44th place over 10 km classic. In the further course of the season she achieved three places in the points and at the end of the season she finished 43rd in the overall standings. This is her best overall placement in the Eastern Europe Cup so far. She made her debut in the cross-country skiing world cup in Rybinsk in February 2015 . She finished 30th in the freestyle sprint and thus collected one World Cup point. For her it was this only World Cup start and at the end of the season she finished 115th in the overall World Cup in the 2014/15 season. In February 2016 she reached her only top ten positions in the Eastern Europe Cup with ninth place in the 10 km freestyle and eighth place in the sprint at the Eastern Europe Cup in Syktywkar .
Russia