MacAulay participated in hockey since the age of six, playing on AAA boys teams until the age of 13. In 2005, MacAulay played for P.E.I. at the Quebec International Peewee Tournament. During the 2005–06 season, MacAulay captained the P.E.I. Young Islanders. With the Warner School, she won a silver medal at the JWHL Challenge Cup. In addition, she competed for Team Atlantic at the 2009 National Women's Under-18 championship in Surrey, B.C., and was part of a sixth-place finish.
NCAA On January 16, 2012, it was announced that MacAulay committed to join the
Clarkson Golden Knights women's ice hockey program in autumn 2012. Her first NCAA assist and NCAA goal occurred in the same contest, a 5–1 win versus the Vermont Catamounts on October 13, 2012. During the
2014–15 Clarkson Golden Knights women's ice hockey season, MacAulay was named team captain. Of note, she would log a career high in points (33) and power play goals (5) during said season.
Hockey Canada She was a member of Canada's National Women's Development Team that won a gold medal at the 2015 Nations Cup (formerly known as the Meco Cup).
NWHL In the
2015 NWHL Draft, she was a fifth-round selection of the
Boston Pride ==Career stats==