Mikosz has appeared in 91 games, including 84 as a starter, during her career with the Warhawk softball team. As a freshman in 2016, the catcher garnered honorable mention All-WIAC accolades after hitting .311 with 12 doubles and 25 runs batted in over 43 games, helping UW-Whitewater win the WIAC regular season and tournament titles and reach the NCAA Tournament. After a year off, Mikosz returned to help the Warhawks claim back-to-back WIAC championships and NCAA Tournament bids in 2018 and 2019. Last spring, she played 30 games, including 26 as a starter, and ranked among the top 10 in the conference in fielding putouts (146). Mikosz is a 2019-20 UW-Whitewater Chancellor's Scholar-Athlete, a four-year member of the WIAC Scholastic Honor Roll and a three-time Easton/NFCA Scholar-Athlete. She is majoring in physical education.