Her mother Susan managed the local Riley Rink, where Danielle and her sisters spent much of their childhood, fostering a deep love for hockey and sports.
[3] Marmer attended The Loomis Chaffee School in Windsor, Connecticut, where she excelled as a three-sport athlete, playing ice hockey, soccer, and lacrosse.
[4] Following high school, Marmer attended Quinnipiac University and graduated summa cum laude with a bachelor's degree in Legal Studies in 2017.
[8] In the playoffs, Marmer’s roster moves were instrumental as the Fleet swept their first-round series against favored Montreal, winning all three games in overtime and advancing to the Walter Cup Finals.
Although the Fleet narrowly missed winning the Walter Cup, losing in the final game on May 29, 2024, their performance solidified the team as a formidable contender in the league's inaugural season.