Rice is an alumna of FlipCity South (as are Jaden and TVCC's DeVonte "Dee" Joseph), and she also grew up in the competitive sport of power tumbling, a gymnastics discipline that is not yet recognised by the Olympics but holds meets internationally for the highest-level tumblers. You know the tumbling passes in floor routines that artistic gymnasts like Jordan Chiles do? Power tumblers do flips without the routine and music; they tumble down a long floor called a track.
Rice competed nationally and internationally since 2013, according to USA Gymnastics. Her last tumbling competition that USA Gymnastics has on record was the 2018 USA Gymnastics Championships, where she finished fourth. This video in particular is from the 2017 Winter Classic, where Rice came in third. Notably, she made the 2018-19 trampoline and tumbling senior national team.