Kammala jumla mai zuwa: A shekara ta 2007, tana cikin tawagar U17 ta Jamus wacce ta zama zakara a gasar zakarun Turai ta mata ta shekara ta 2009. Tare da ƙungiyar U19 ta Jamus a 2010, Benkarth ya halarci gasar cin kofin mata ta UEFA ta 2010 a Macedonia. Tawagar ta kai wasan kusa da na karshe, amma ta yi rashin nasara, ga zakara na gaba, Faransa a bugun fanareti (5<unk>3). A wannan shekarar ta kasance cikin tawagar 'yan wasan da suka lashe gasar.
2010 FIFA U-20 Women's World Cup a kasarsu, ta kasance mai tsaron gida na uku a bayan Almuth Schult da Desirée Schumann ba tare da buga wasa ba. A gasar cin kofin duniya ta mata ta FIFA U-20 ta 2012 a Japan ta buga kowane minti a cikin wasanni shida, Jamus ta taka leda a gasar ba tare da cin kwallaye guda ba (tsabtace takarda). Jamus kawai ta yi rashin nasara a wasan karshe da Amurka, don mafi ƙarancin ci, 1: 0 (ƙwallon da Kealia Ohai ya zira). An zabi Benkarth a matsayin mafi kyawun mai tsaron raga na gasar tare da "Golden Glove". A watan Oktoba na 2012 an zabi Benkarth don babban tawagar kasa a karon farko. A ranar 28 ga Yuli 2013 an kira ta don UEFA Women's Euro 2013 a Sweden, ta maye gurbin Kathrin Längert a cikin tawagar.