Kauste took over as skip of the Finnish team in 2015, leading her team at the 2015 European Curling Championships. There, the rink finished with a 6-3 round robin record, in a tie for third place. In the semifinals, she lost to Scotland's Eve Muirhead, but rebounded to win the bronze medal against Denmark's Lene Nielsen. This qualified the team to play at the 2016 World Women's Curling Championship. They were less successful there, finishing with a 1–10 record, in 11th place.