Bos finished fifth at the Skeleton Junior World Championships for 2017 in Sigulda, after finishing second at the same event the previous year. At the 2017 Senior World Championships in Königssee, Bos finished 14th, down from 8th the previous year. She finished seventh in the 2017 World Cup race at Winterberg, also the European championships, in which she was fifth after discounting the two non-European competitors ahead of her. Her best finish on the World Cup was a bronze medal in 2017 at the Olympic test event in Pyeongchang, and she finished the 2016–17 season ranked 12th overall. In the 2018 European Championships, held in December, 2017 at Igls, Bos again finished fifth.