In 2018, Lise-Marie obtained her Master of Laws at Ghent University (magna cum laude). As part of an overseas exchange, she studied at the University of Miami for one semester in 2016. In 2019, Lise-Marie also obtained a specialised Master in Social law at the Université Libre de Bruxelles (magna cum laude). In September 2019, she took the oath at the Bar of West Flanders and joined Claeys & Engels Kortrijk.