Whakakiia te rerenga e whai ake nei: I te 2012 Summer Olympics i Rānana, Joyce whakairi i te wa 25.28 hēkona i roto i te Heat 8 o te
50 mita freestyle, e akiaki ana ia ki te kaukau ki etahi atu kaiwhakataetae e rua mo te tekau ma ono me te waahi whakamutunga i roto i te 50-mita haurua-mutunga. I akiakihia e te mano o te kaainga, ko te kaiwhakataetae o Ingarangi a Amy Smith i wikitoria i te kaukau me te waa 24.82, ka mutu te uru atu o Joyce ki te kaupapa.