Griebel returned the World Cup in 2014–15, earning her best finishes to date with fourth-place results at Calgary, Altenberg, and Königssee, but finished a disappointing 12th at her first senior World Championships. She ended that season ranked sixth in the World Cup rankings, behind two of her German teammates. The following (2015–16) season, Griebel finished fourth again at Altenberg and improved her World Championships result to fifth, but then was forced to sit out the entire 2016–17 season due to injury. Returning to the World Cup in 2017–18, another Olympic-shortened season, she fared poorly in two races before being demoted to the ICC squad in favor of Anna Fernstädt.