Hartje played her college hockey at Yale. Following her rookie season at Yale, she played for HC ŠKP Bratislava in the European Women's Hockey League (EWHL), leading the team in points with 25.[1][2]
Returning to the Bulldogs for the 2021–22 season, she broke Yale's record for most assists in a season with 35 and scored 51 points, the second most single-season points in Yale history. She led ECAC Hockey in points-per-game with 1.42. She was named first-team All-ECAC and first-team All-Ivy League while leading Yale to its first ever Frozen Four. In 2022–23, she averaged two points per game and broke her own Yale single-season assists record, recording 39 in a season. She was the NCAA statistical leader in assists per game with 1.18/game and was named an All-American. She was once again first-team All-ECAC and first-team All-Ivy. Yale won the Ivy League and Hartje was named Ivy League Player of the Year.[3]
In 2023–24, Hartje served as the captain for Yale.[4] She earned All-Ivy and All-ECAC honors and broke Yale's all-time scoring record which had stood for 35 years, graduating with 168 points in 129 games.[5][6][7]
Professional
Entering the 2024 PWHL Draft, Hartje was projected as a top-20 pick by The Hockey News because of her 200-foot play, playmaking ability, and face-off prowess.[6] She was drafted by the New York Sirens in the fifth round, 25th overall.[8] The Sirens signed her to a three-year contract following their preseason camp.[9]
International play
Hartje played as a member of the United States under-18 team at the U18 Series against Canada in 2018. And has twice represented the US as part of the U-22 team playing against Canada. She has also participated in USA Hockey Women's National Festivals and player development camps, most recently at the senior level in 2024.[10]
Hartje played for the Slovak national team in 2021 against Austria, Germany, and the Czech Republic after she had lived in Slovakia for eight months and established residency. She received permission from USA Hockey to play with the team and is still eligible for the American national team player pool.[11]
She grew up in Bloomfield Hills, Michigan, a northern suburb of Detroit, and attended Detroit Country Day School. During high school, she played for Detroit Country Day's tennis and soccer teams and, ultimately, captained both teams. A four-time All-State selection in both sports, she was a Michigan Athlete of the Year and named High School Athlete of the Year by The Jewish News and the Michigan Jewish Sports Foundation.[2][11]
She studied political science at Yale University and was a four-time Academic All-American. She was awarded ECAC Hockey's Mandi Schwartz Scholar-Athlete of the Year Award in 2024 for her on-ice skill and off-ice dedication to community service. Her community outreach included organizing volunteer work at the Yale Community Kitchen, a fundraiser for Court Appointed Special Advocates, and involvement with Yale's Student Athlete organizations.[12][13] She was also a Sarah Devens Award recipient, an award given jointly by Hockey East and the ECAC to one player.
