Justice Fournier was appointed to the Quebec Superior Court in Montréal in 2009. After completing her law degree at the Université du Québec à Montréal in 1981, she was called to the Bar of Quebec in 1982.
She practised law in Montréal with Leduc, Lebel from 1982 to 1994 and with Lebel & Associés from 1994 to 2000. She then practised with Robinson, Sheppard, Shapiro until her appointment to the Superior Court of Québec.
She practised civil, banking, and commercial litigation, particularly in securities law, insolvency, and construction. Justice Fournier also taught at the École de formation professionnelle du Barreau du Québec in the areas of contracts, securities, evidence and advocacy skills. She has been a frequent speaker, particularly on securities law, guarantees, procedure, and evidence.
Justice Fournier was appointed to the Court of Appeal on June 22, 2019.