Brook became the artistic director of the Théatre National de Nice (TNN) in January 2014. There she directed a production of the "Odyssey" in June 2014 across gardens and museums in Nice, then in the TNN theatre, a production of "Peer Gynt" in September 2014 (shown at the Barbican Centre, London, that October). In January 2015, she directed "Shakespeare’s Sister" based on works by Virginia Woolf and Marguerite Duras. She also produced "Hov Show" with the comedian Hovnatan Avedikian (December 2014) and, in February 2015, "The Tempest".