[8] In 2007, she starred in Demandez la permission aux enfants alongside Pascal Légitimus and Sandrine Bonnaire.

[9] Marder was discovered by Éric Ruf, general administrator of the Comédie-Française, and chosen after a collective audition.

[6] She regularly appeared on stage there in classical roles, including as Claudine in Molière's George Dandin ou le Mari confondu and La Jalousie du Barbouillé, Atalide in Jean Racine's Bajazet and Hermione in Euripides' Electra and Orestes.

[20] That same year, she starred in Sylvain Desclous's Grand Expectations,[21] for which she received a second César nomination for Most Promising Actress.

Set in the 1930s, Marder portrays a lawyer who works to acquit her young actress roommate on grounds of self-defense after she is accused of murdering a wealthy producer.