She is legally blind, and represents Australia internationally in three sports: skiing, athletics and cycling. Besides her skiing achievements, she has represented Australia in athletics at the 2012 Summer Paralympics in London, and won a silver and a bronze medal at the 2011 Christchurch IPC Athletics World Championships in long jump and javelin, respectively. She has also represented the state of Victoria as a junior in netball and basketball. Gallagher was selected in the Australian cycling team with her pilot Madison Janssen for the 2016 Rio Paralympics. Her "long term goal is to be the first Australian to medal at a summer and winter Paralympics or Olympics". This was achieved when she won a bronze medal in the Women's B/VI 1000m time trial in Rio.