Brandt again led Minnesota in goals in her junior year, and her team won the 2015 NCAA title by defeating Harvard.

Brandt was named as one of three finalists for the Kazmaier Trophy[5] and as WCHA Player of the Year in both her sophomore and junior seasons.

Her third-period goal against Harvard goaltender Emerance Maschmeyer in the championship game of the 2015 NCAA National Collegiate Women's Ice Hockey Tournament would stand as the game-winning tally for the Golden Gophers.

[6] Brandt won a gold medal with the United States national under-18 team at the 2011 International Ice Hockey Federation's world championships.

[7] On January 1, 2018, Brandt was named to Team USA's roster to represent the United States at the 2018 Winter Olympics.

[8] She helped Team USA win their first gold medal since 1998, and finished the tournament with two points in five games.

[9][10] On January 2, 2022, Brandt was named to Team USA's roster to represent the United States at the 2022 Winter Olympics.

[18] The sisters were originally involved in figure skating as small children, but Hannah switched to hockey at age 5, with Marissa following suit a few years later.