She is the Dutch record holder for the heptathlon with a score 6867 points, and won eight national titles (mostly for the long jump).

Her father, Ronald Vetter, is a long-standing athletics coach and her mother, Gerda Vetter-Blokziel a two-time Dutch javelin champion.

After replacing her coach in 2012 with her father, she decreased her training to 80 per cent compared to the other women in the combined event group to protect her fragile body.

[4] She won the Multistars Firenze Trofeo Zerneri Acciai, the opening meeting of the 2013 IAAF Combined Events Challenge with 5872 points.

[4] In 2015, Vetter finished sixth at the Hypo-Meeting with a new personal best with 6458 points,[7] and won the heptathlon at the Mehrkampf-Meeting in Ratingen, Germany.

[4][8] Despite an injury, she also competed in the heptathlon event at the 2015 World Championships in Athletics in Beijing, where she reached the 12th place with 6267 points.

In July, Vetter took a surprise victory at the European Championships heptathlon in her home town Amsterdam, with a score of 6626 points, an improvement of the national record of Dafne Schippers.

[12] In August 2017, Vetter set a new national heptathlon record of 6636 points at the World Championships in London, where she won the bronze medal, behind 2016 Olympic champion Nafissatou Thiam (gold) and Carolin Schäfer (silver).

[18] She led through the first day before Thiam and after world champion Katarina Johnson-Thompson had to leave the competition due to an injury.