In this capacity she spearheaded several legislative changes, including an Act to protect the information of consumers on products and services (loi sur la protection et l'information des consommateurs de produits et de services, 1978), well-known under the name of loi Scrivener.
She was then elected a Member of the European Parliament (1979–1984).
In 1989 she became the European Communities Commissioner for Taxes, Revenue Harmonization and Consumer Policies in the Delors Commission, a position she retained until 1995.