In her first World Junior Curling Championships in 2012, Svatoňová was part of the first ever Czech Republic curling team to win a World Championship medal. Her team won the silver medal, Svatoňová playing second for Zuzana Hájková. The team had a strong performance, finishing the round robin with a 6-3 record, in a five-way tie for second. The team avoided a tie breaker however, and after losing their first playoff game to first place Scotland, they rallied to win the semi-final against Sweden's Sara McManus before losing once again to Scotland's Hannah Fleming in the final.