In 2013, at the age of 20, Königstein accomplished the breakthrough in the German National Women's competition with a 5th place at the 5000m race and also had her premier appearance for the German National Team at the European Cross-Country Championships in Belgrade. At the European Cross-Country Championships in Chia, Italy, in 2016 she placed 20th in the Women's competition. Amrhein won the Silver Medal at the German Cross-Country Championships, placed 6th at the World University Games in Taipei over the 21.1 km and celebrated her debut over the Marathon distance at the Berlin Marathon. In adverse weather conditions she finished 11th after 2h 34min and 14sec in a world class field lead by Gladys Cherono. In spring 2018 Königstein finished 3d at the German Half Marathon Championships. Three weeks later at 29 April 2018 she won her first Gold Medal at the German Marathon Championship, finishing 2nd at the Düsseldorf Marathon behind Volha Mazuronak in 2h 32min and 34sec.