Kammala wannan jumla: Ta makanta ne bisa doka, kuma tana wakiltar Ostiraliya a duniya a wasanni uku: tseren kankara, wasan motsa jiki da kuma hawan keke. Baya ga nasarorin da ta samu a wasan tseren kankara, ta wakilci Ostiraliya a wasan motsa jiki a wasannin Paralympics na bazara na 2012 a London, kuma ta lashe lambar azurfa da tagulla a gasar
2011 Christchurch IPC Wasannin Wasanni na Duniya a tsalle mai tsayi da javelin, bi da bi. Ta kuma wakilci jihar Victoria a matsayin ƙarami a cikin ƙwallon ƙafa da kwando. An zabi Gallagher a cikin tawagar keke ta Australiya tare da matukin jirgi Madison Janssen don wasannin Paralympics na Rio na 2016. "Manufarta ta dogon lokaci ita ce ta zama 'yar Australiya ta farko da ta ci lambar yabo a wasannin Paralympic na bazara da na hunturu ko kuma wasannin Olympics". An cimma wannan ne lokacin da ta lashe lambar tagulla a gasar tseren mita 1000 na mata B / VI a Rio.