 Kọ itẹsiwaju fun paragirafi yii - Sampson ti ṣe aṣoju England ni ipele labẹ 17 ati labẹ 19. O bere fun England U17s ni 13 April 2012 ni ikuna ile kan si Iceland ni 2012 UEFA Womens Under-17 Championship qualifier. O ṣe awọn ifarahan mẹrin siwaju sii ni gbogbo ọdun 2014 fun England U17s o si gba goolu kan; lodi si Israeli ni igbasilẹ fun 2013 UEFA Womens Under-17 Championship : ó ṣe tán. Ni ọdun 2013, Sampson ṣe igbesẹ si England U19s o si ṣe akọkọ rẹ ni Oṣu Kẹrin Ọjọ 4 lodi si Serbia. O tun ṣe ifarahan ikọlu miiran ṣaaju ki o to yan nipasẹ England fun 2014 UEFA Womens Under-19 Championship, o ṣe awọn iṣẹju ni kikun ni awọn ere meji ti orilẹ-ede rẹ ṣaaju ki o to padanu ere kẹta ati ikẹhin bi England ti jade ni ipele ẹgbẹ. 