Sealey is a 5-foot-8 sophomore setter from Roundup, Mont.
Second-seeded Rocky beat fifth-seeded University of Providence 3-2 in the Frontier Conference semifinals and downed sixth-seeded Montana Western 3-1 in the championship match.
Sealey averaged 11 assists and 3.44 digs per set.
Also nominated and listed in alphabetical order; Kaylee Fritz of Montana Western and Bella Thompson of the University of Providence.