Marion has a PhD from Université Paris-Dauphine. Her research interests are in public sector accounting — and more broadly financial and international accounting, including accounting standards and accounting quality; credit rating agencies.
Marion became intrigued and passionate about public sector accounting while she was a credit rating advisor with the French investment bank Crédit Agricole CIB. This experience inspired her to undertake a PhD on Sovereign Debt Accounting. From 2017-18 she was a visiting scholar at Georgetown University's McDonough School of Business. She is now University Lecturer in Accounting at Cambridge Judge Business School.