[3] Cooney-Cross attended Ballarat High School as well as Surf Coast Secondary College in Torquay, Victoria before dropping out to pursue her dream of soccer.

[6] On 28 October 2017, she made her debut for the club in a 2–1 home win against Canberra United, playing the full 90 minutes in her first competitive league match.

[3] Cooney-Cross moved to Western Sydney Wanderers for the 2019–20 season, where she scored in her debut, a free-kick at the 92nd minute mark of a 2–1 home win over Adelaide United.

[10] On 11 April, Cooney-Cross scored directly from a corner kick in the 120th minute of extra time to win the 2021 W-League Grand Final, beating season premiers Sydney FC 0–1.

[18] She was later named in the squad for the 2017 AFC U-16 Women's Championship finals, where Australia was knocked out in the group stage, their only points coming from a 3–2 win against Bangladesh.

[22] She scored Australia's first goal of the tournament in a 5–1 opening match loss against North Korea, heading in at the 16th minute mark from an Indiah-Paige Riley cross.

[27] Cooney-Cross is well-known for her playful and cheeky personality, as well as her sense of humour, having been given the affectionate title of an "annoying little sister" by national team and Arsenal teammates Steph Catley and Caitlin Foord.

For example, one of her closest friends is Matildas teammate Charlotte Grant, who plays for arch-rival club Tottenham Hotspur, and the two have attended each other's games despite the North London Derby being one of the fiercest sporting rivalries in the world.