Finster teamed up with her first pairs partner, Joseph Goodpaster, at the age of 10. Together, they placed eighth at the 2014 U.S. Championships on the intermediate level. Finster paired with Eric Hartley for the next two seasons and won the 2015 U.S. national novice pairs title. She is the youngest skater to win the national novice pairs title. Finster then competed one season with Brandon Kozlowski, finishing tenth in the junior division at the 2017 U.S. Championships. She did not compete during the 2017–18 season.