She is well known for her biography of French Prime Minister Édouard Daladier, and her work on the construction of the European identity.

[1] She was awarded a master's with highest honors (mention très bien) in 1968, then passed the competitive agrégation exam in history-geography in 1969.

[1] From 1970 until 1979 Du Réau taught high school business and history in Laon and then at Lycée Janson-de-Sailly in Paris.

One was a programme of collaboration between French, central and eastern European universities considering both academic and administrative development.

[8] Du Réau took emerita status in 2005 but continued to lead doctoral seminars and supervise dissertations, overseeing more than a dozen in her retirement.