She is co-author of Principles of French Law (OUP, 2nd ed., 2008). Her other research interests include public law, EU law and comparative law. In constitutional law, she has always had an interest in mapping and understanding the dynamics that prompt constitutional change in different types of constitutional orders. More recently, she has researched the attempts to use mediation to resolve disputes in administrative law. At present, she is devising a comparative research project on the framework for control of discretionary powers, an area of administrative law which is particularly topical in the UK and which would benefit from more comparative law research.