Nyorai kuenderera mberi kweiyi ndima - Muna Kurume 2007, Duggan ane makore gumi nemashanu akauya achibva pabhenji rekutsiva kuti arove paakatanga kuEngland Under-17s. Iye kubvira ipapo akamiririra England pa Under <unk>19, Under <unk>20 uye Under <unk>23 mazinga. Akatamba muFIFA U-20 Women's World Cup muna 2008 na2010
. Pazuva rokuberekwa kwaDuggan rechi18, akarova chimwe chezvinangwa zviviri muEngland muna 2009 UEFA Women's Under-19 Championship mukukunda kwekutanga, vachipesana neSweden muBelarus.