Tusi se faʻaauau mo lenei parakalafa - Janssen taʻalo mo le taimi muamua mo se Junior filifilia o Royal Dutch Football Association i le 17 Mati 2010 i le faʻauo taʻaloga o le U-15 'au a le atunuʻu faʻasaga ia Egelani. I le 2012, sa avea o ia ma kapeteni o le au a le Dutch U-17 i taʻaloga agavaa mo le 2012 UEFA Women's Under-17 Championship
ma na taitaia foi le au, i le avea ai ma kapeteni, i le agavaa mo le 2013 UEFA Women's Under-19 Championship. I le 2014, na ia manuia ai ma lana 'au e agavaʻa mo le taʻamilosaga mulimuli o le 2014 UEFA Women's Under-19 Championship i Nouei, lea na manumalo ai Netherlands i le ulutala mo le taimi muamua ma le 1<unk>0 manumalo faasaga i Sepania. Na taalo Janssen i taaloga uma e lima o le taamilosaga.