In 2007, she was on the Germany U17 squad which was the champion in the 2009 UEFA Women's Under-17 Championship. With the Germany U19 team in 2010, Benkarth took part in the 2010 UEFA Women's Under-19 Championship in Macedonia. The team reached the semi-finals, but lost, for the future champion, France in the penalties (5–3). That same year she was part of the national team that won the 2010 FIFA U-20 Women's World Cup in their own country, remained as the third goalkeeper behind Almuth Schult and Desirée Schumann without playing any match. In the 2012 FIFA U-20 Women's World Cup in Japan she played every minute in all six matches, Germany played in the tournament without conceding one single goal (clean sheet). Germany only lost in the final against the United States, for the minimum score, 1:0 (goal scored by Kealia Ohai ). Benkarth was named the best goalkeeper of the tournament with the "Golden Glove". In October 2012 Benkarth was nominated for the senior national team for the first time. In until 28 July 2013 she was called for the UEFA Women's Euro 2013 in Sweden, replacing Kathrin Längert in the squad.