The 6-foot-1 junior outside hitter recorded 420 kills and 165 digs this past season, leading the Marlins (52-3) to the Division 1 state semifinals. Mruzik also posted 65 service aces and 50 assists while compiling a kill percentage of .514 and a hitting percentage of .417. The captain of the 2018 USA Volleyball Youth National Team, Mruzik missed 12 matches for Mercy at the beginning of the season while competing at the NORCECA Continental Championships in Honduras. The United States won the tournament and Mruzik was named MVP.
Mruzik has maintained a 3.39 GPA in the classroom. She has made a verbal commitment to play volleyball on scholarship at the University of Michigan beginning in the fall of 2020.
A member of the Animal Rights Club at Mercy High, Mruzik has volunteered locally as a youth volleyball coach.