Kammala jumla mai zuwa: Janssen ya taka leda a karon farko don zabin Junior na Royal Dutch Football Association a ranar 17 ga Maris 2010 a wasan sada zumunci na U-15 na kasa da Ingila. A cikin 2012, ta kasance kyaftin din kungiyar 'yan wasan Dutch U-17 a wasannin neman shiga gasar cin kofin duniya.
2012 Gasar Mata ta UEFA ta Under-17 kuma ta jagoranci ƙungiyar, a matsayin kyaftin, a cikin cancantar zuwa Gasar Mata ta UEFA ta Under-19 ta 2013. A cikin 2014, ta yi nasara tare da tawagarta don cancanta zuwa zagaye na karshe na gasar zakarun Turai ta mata na shekara ta 2014 a Norway, inda Netherlands ta lashe taken a karon farko tare da nasarar 1<unk>0 a kan Spain. Janssen ya buga wasanni biyar a gasar.