Ramba uchinyora ndima iyi - Johnston akahwina menduru mbiri dzegoridhe neNational Women's Under-22 Team paAir Canada Cup. Rebecca akaita kutanga kwake pa2008 IIHF World Women's Championship, achitamba mumitambo yese mishanu sezvo Canada yakahwina sirivheri. Rebecca Johnston aiva nhengo yeCanada Under-22 Team. Chikwata cheU-22 chakapinda mumakwikwi eMLP Cup, akaitirwa kuRavensburg, Germany kubva musi wa2 kusvika musi wa6 Ndira, 2009. Johnston akanga ari mutezo wechikwata chakahwina menduru yesirivha. Mumutambo, Johnston akaunganidza mapoinzi manomwe (3 zvibodzwa, 4 zvinobatsira). Mutambo wake wakanakisisa waiva mukukunda Russia 11-0. Johnston akarova hat-trick ndokuwedzera rubatsiro. Mukuwedzera kuMLP Cup, Johnston akatamba neCanada Senior Team muFour Nations Cup pakati paNovember 4<unk>9, 2009. Johnston akanga ari mutezo wechikwata chakahwina menduru yesirivha. Mumutambo wemenduru yegoridhe ye2010 Four Nations Cup, chinangwa chechipiri chaRebecca Johnston chemutambo chakawana menduru yegoridhe yeCanada. Chinangwa chakadaro chakauya pakutamba kwesimba 6:21 kupinda mukuwedzera nguva. Chibodzwa chacho chakapa Canada kukunda United States 3-2. Wakanga uri mukombe wechigumi nembiri weHockey Canada munhau yegore negumi nemashanu yemutambo wacho. Akanga achizotungamirira vose vaKanada vanorova mumutambo wacho nezvinangwa zvina. Mumutambo wakanangana neRussia pa2012 IIHF Women's World Championship
, Johnston akarekodha mutambo wemapoinzi mashanu (chinangwa chimwe, mana anobatsira) mukukunda 14<unk>1. Muna Zvita 2013, Johnston akatumidzwa ku2014 Olimpiki roster yeCanada.