Pari gbolohun ti o tẹle: Janssen ṣe ere fun igba akọkọ fun yiyan Junior ti Royal Dutch Football Association ni Oṣu Kẹta Ọjọ 17, Ọdun 2010 ni ifẹsẹwọnsẹ ọrẹ ti U-15 ti orilẹ-ede orilẹ-ede lodi si England. Ni ọdun 2012, o jẹ adari ẹgbẹ Dutch U-17 ni awọn ere-idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije fun awọn idije.
2012 UEFA Women's Under-17 Championship ati tun mu ẹgbẹ naa, bi olori, ni igbasilẹ fun 2013 UEFA Women's Under-19 Championship. Ni ọdun 2014, o ṣaṣeyọri pẹlu ẹgbẹ rẹ lati ni ẹtọ fun iyipo ikẹhin 2014 UEFA Women's Under-19 Championship ni Norway, nibiti Netherlands ti gba akọle fun igba akọkọ pẹlu 1<unk>0 ṣẹgun Spain. Janssen ti kópa nínú gbogbo ìdíje márùn-ún nínú ìdíje náà.