[6] After being selected, McKeown chose to play in her final year with USC before joining the Spirit after the college soccer season concluded.

[8] The next day, she made her NWSL debut, coming on as an 87th-minute substitute for Ashley Sanchez in a 1-1 draw with the Orlando Pride.

McKeown directly contributed to the victory, drawing a penalty in the 66th minute of the match after being fouled in the box by Chicago defender Tierna Davidson.

[16] On June 21, 2023, McKeown was selected as the NWSL Player of the Week after scoring 2 goals (in separate competitions) and making several important defensive actions.

[20] During the Spirit's quarterfinal playoff game against Bay FC, McKeown scored a goal from outside the box in the 86th minute.

On July 17, 2018, McKeown was named to the roster for the 2018 FIFA U-20 Women's World Cup, alongside USC teammate Savannah DeMelo.

[23][24][25] McKeown appeared in the starting lineup for the United States in the team's second group stage match, versus Paraguay.