At the 2014 IIHF Under-18 Women's World Championships, she led all skaters with a plus/minus rating of +9. To date, her best international performance came in the 2015 IIHF World Championships in Malmö, Sweden, where she contributed 5 points in 4 games as a member of the Gold-Medalist team.
Megan Keller played for the Boston College women's hockey team. She emerged as one of the nation's best defensive players in the 2015–16 campaign. She was a Patty Kazmaier Award top-10 finalist and named to the WHEA First-Team All-Stars, and an NCAA All-Tournament Selection. She led all defensive players in points in the nation and broke several team and conference scoring records for defense. She was also part of one of the best defensive units in the country, supporting 14 shutout games.