Pedzisa mutsara unotevera: Janssen akatamba kekutanga kweJunior kusarudzwa kweRoyal Dutch Nhabvu Association musi wa17 Kurume 2010 pamutambo wehukama weU-15 timu yenyika kurwisa England. Muna 2012, aive kaputeni wechikwata cheDutch U-17 mumitambo yekukodzera ye
2012 UEFA Women's Under-17 Championship uye akatungamirawo timu, semutungamiriri, mukukodzera 2013 UEFA Women's Under-19 Championship. Muna 2014, akabudirira nechikwata chake kuti akodzere kuenda kumakwikwi ekupedzisira e2014 UEFA Women's Under-19 Championship muNorway, uko Netherlands yakakunda zita kekutanga nekukunda 1<unk>0 kurwisa Spain. Janssen akatamba mitambo yose mishanu mumutambo wacho.