Pedzisa mutsara unotevera: Johnston akawana menduru mbiri dzendarama 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 pa
2012 IIHF Women's World Championship, Johnston akanyoresa mutambo wemapoinzi mashanu (chinangwa chimwe, mana anobatsira) mukukunda 14<unk>1. Muna Zvita 2013, Johnston akatumidzwa ku2014 Olimpiki roster yeCanada.