[2] Lassen became involved in the sport of weightlifting in 1995 because of her daughter's court case, Lassen vs Yukon Weightlifting Association,[3] when the younger Lassen's membership was withdrawn causing her to potentially miss both the Canadian Championships and the Junior World Championships (the first event of its kind for junior women).
[5] In 2011, Lassen co-authored the IWF Technical Officials Roles and Responsibilities - A Guide to Competition.
[6] In 2015, Lassen was also Chair of the SportsTravel Magazine award-winning IWF World Weightlifting Championships 2015 hosted by the Harris County Houston Sports Authority.
Currently Lassen is the General Manager of the Whitehorse 2020 Arctic Winter Games which was cancelled on March 7, 2020 due to the COVID-19 global pandemic.
As a practitioner Lassen has been involved in multiple research papers including Best Practices in Volunteer Management: An Action Planning Guide for Small and Rural Nonprofit Organizations[9] and Promising Practices: Transitioning and Transitioned Athletes in Sport (2009)[10] as well as an active arbitrator for Sport Law & Strategy Group.