Cook began her
collegiate career at
Boston University during the
2016–17 season. During her freshman year, she appeared in all 37 games and recorded four goals and 11 assists. She led all
Hockey East freshmen with a +18
plus–minus and was named to the All-Hockey East Rookie Team. During the
2017–18 season, in her sophomore year, she recorded two goals and 24 assists in 37 games and was named to the All-Hockey East First Team. She was also a runner up for the Hockey East Best Defenseman award. During the
2018–19 season, in her junior year, she recorded three goals and 12 assists in 37 games and was named to the All-Hockey East Second Team. During the
2019–20 season, in her senior year, she recorded ten goals and 20 assists in 36 games, and was again named to the All-Hockey East First Team. She led Hockey East defencemen in goals (6), assists (14) and power play points (20), and led all NCAA defenceman with five game-winning goals. She was named a three-time New England Division I All-Star, joining
Marie-Philip Poulin as the only players in program history to receive the award three times. She finished her collegiate career with 24 goals and 75 assists in 147 games. Her 99 points are the most by a defenceman in program history. ==Professional career==