During her senior season she posted a 26–2 record with a 0.20 earned run average and 418 strikeouts in 175 innings, adding 20 shutouts, including 10 no-hitters and six perfect games, and was named the 2015 Gatorade National Softball Player of the Year.

In addition to pitching, she was one of the team's best hitters as tallied a .325 batting average, eight homers and 29 RBI and had 15 multiple-hit games and eight multi-RBI contests.

[1] She made her collegiate debut on February 10, collecting two hits in a game against the South Dakota Coyotes, while also throwing a run-rule shutout with seven strikeouts over the San Diego State Aztecs.

In her debut at the Women's College World Series, Garcia pitched all of UCLA's games and left with a 1–1 record, falling in the second round.

Garcia led the Bruins to the NCAA title completing four of five victories pitched, throwing a shutout, a 10-inning win, batting .333 and leading with eight RBIs, including defeating the No.

[26][27] Garcia saw limited playing time on the Team USA "Stand Beside Her" tour that was suspended due to the COVID-19 pandemic in March, 2020.

Garcia returned to UCLA for her final collegiate year before joining the United States women's national softball team prior to the rescheduled Olympics in July, 2021.

[28] She represented Team USA at the 2020 Summer Olympics, where she made two appearances as a pinch-hitter in six games and won a silver medal.

[33] On January 7, 2022, Garcia was named a volunteer assistant coach for the San Diego State Aztecs softball team for the 2022 season.