Parnaby is from New South Wales.[7] She attended Narrabeen Sports High School and NBSC Freshwater Senior Campus.[8] She currently attends the University of Hawaiʻi at Mānoa. In 2011/2012, she was a junior.[9] She is openly lesbian.[10]
Softball
Parnaby is a pitcher,[8][11][12][13][14] and plays in relief.[15] She started out playing softball for Manly Warringah Softball Association.[8] In 2004, she was named to the New South Wales U16 team.[16] In 2006, she was named to the Australian All Schools team. In 2006, she represented Australia on the junior national U19 team.[8] She had a scholarship with and played for the Australian Institute of Sport (AIS) in 2006.[8] She was the first player from Manly Warringah Softball Association to earn a spot on the AIS roster.[8] In 2006, she played for the New South Wales side that won the Australian All Schools Softball Championship.[17] Parnaby transferred to North Shore District Softball Association in 2007 joining their Open Women's and State League teams. In 2009, she was again with and played for the AIS team.[18]
Parnaby was named to the roster for the Tokyo Olympic games. She went 1–2 for Team Australia, tossing 13 innings and surrendering 13 hits, 6 earned runs for a 3.23 ERA and 1.15 WHIP, also totaling two walks and struck out 7. The team placed fifth and did not medal for the first time in softball at the Olympics.[20][21] Full details are in Australia at the 2020 Summer Olympics.
University
Parnaby plays for the University of Hawaiʻi at Mānoa[11][12][14][19] in the United States. She played with the team during the 2010, 2011 and the 2012 season.[19] In February 2012, her team played the UMKC Kangaroos but she did not pitch in the game.[13] In a March 2012 game in the Bank of Hawaii Invitational against Radford University, she struck out eight players and limited them to three hits in a 7–0 victory for her team.[11][12] At the time, her team was ranked twenty-second in the nation[12][14] and went on to win the Invitational.[22] Their record to the season went to 17–0 with Parnaby having a 7–0-record season to date.[22]
^MATP (16 May 2006). "NSW top of the class". The Daily Telegraph. Sydney, Australia. p. 63. Retrieved 13 March 2012.
^ abcGrimaux, Andre (27 February 2009). "Weaver out on high note". The Northern Times. Brisbane. p. 64. TNT_T-20090227-1-064-931013. Retrieved 7 March 2012.