Dee ihe na-esote paragraf a - Johnston meriri nrite ọlaedo abụọ na National Women's Under-22 Team na Air Canada Cup. Rebecca mere nke mbụ ya na 2008 IIHF World Women's Championship, na-egwu egwuregwu ise niile dịka Canada meriri ọlaọcha. Rebecca Johnston bụ onye otu ndị otu Canada n'okpuru afọ 22. U-22 sonyere na MLP Cup, nke emere na Ravensburg, Germany site na Jenụwarị 2<unk>6, 2009. Johnston so n'òtù meriri ọlaọcha. Na asọmpi ahụ, Johnston chịkọtara isi asaa (3 ihe mgbaru ọsọ, 4 enyere aka). Egwuregwu ya kachasị mma bụ na mmeri 11-0 na Russia. Johnston gbara ọkpụ atọ ma nyekwa aka. Na mgbakwunye na MLP Cup, Johnston so ndị otu ndị okenye Canada n'asọmpi Four Nations Cup n'etiti Nov. 4<unk>9, 2009. Johnston so n'òtù meriri ọlaọcha. N'egwuregwu nrite ọlaedo nke iko mba anọ nke 2010, Rebecca Johnston nyere goolu nke abụọ nke egwuregwu ahụ mere ka Canada nweta nrite ọlaedo. E kwuru na goolu ahụ bịara na egwuregwu ike na 6:21 n'ime oge mgbatị. Ihe mgbaru ọsọ ahụ nyere Canada mmeri 3<unk>2 n'elu United States. Ọ bụ asọmpi Hockey Canada nke iri na abụọ n'akụkọ ihe mere eme afọ iri na ise nke asọmpi ahụ. Ọ ga-eduga ndị Canada niile na-agba bọọlụ n'asọmpi ahụ na goolu anọ. Na egwuregwu megide Russia na 2012 IIHF Women's World Championship
, Johnston debere egwuregwu ise (otu ihe mgbaru ọsọ, ihe enyemaka anọ) na mmeri 14 na 1. N'ọnwa Disemba afọ 2013, a họpụtara Johnston ka ọ bụrụ onye ga-anọchite anya Canada n'egwuregwu Olimpik nke afọ 2014.