Sedunary grew up in Minlaton on the Yorke Peninsula. Originally her sport of choice was hockey, which forced her to drives to Adelaide and back every week for games and training. Her family moved to Adelaide when she was in high school, and she switched to cycling within weeks when the South Australian Sports Institute saw her potential.[1] She went on to represent Australia in the 2007 Australian Youth Olympic Festival in cycling.[1][2] After a year of study at university Sedunary was forced to drop her studies and her cycling due to financial constraints.[1]
Sedunary first played football accidentally. She went to a friend's football game to spectate, but when a player was injured she had to replace them on the field, having never kicked a football before.[1] With no professional Australian rules football competition for women existing yet, Sedunary briefly signed with a lingerie gridiron club as it was similar to football. The competition was disbanded before a game had been played and, rather than pursuing gridiron further she quit and returned to football. In 2016 she joined Morphettville Park Football Club and won the South Australian Women's Football League premiership with them.[2]
