Mezue ahịrịokwu na-esonụ: Janssen gbara bọọlụ na nke mbụ ya maka ndị otu bọọlụ nke Royal Dutch Football Association na 17 Machị 2010 na egwuregwu enyi nke U-15 mba egwuregwu megide England. N'afọ 2012, ọ bụ onye isi nke ndị otu Dutch U-17 na egwuregwu ndị tozuru etozu maka asọmpi U-17 nke mba Netherlands.
2012 UEFA Women's Under-17 Championship ma duru otu ahụ, dịka onye isi, na iru eru maka 2013 UEFA Women's Under-19 Championship. N'afọ 2014, ya na ndị otu ya nwere ihe ịga nke ọma ịbanye na agba ikpeazụ nke 2014 UEFA Women's Under-19 Championship na Norway, ebe Netherlands meriri aha ahụ na nke mbụ ya na mmeri 1<unk>0 megide Spain. Janssen gbara egwuregwu ise niile na asọmpi ahụ.