She married Jean Casimir-Perier, a distant cousin, on 17 April 1873.

He was the grandson of Casimir Pierre Périer, president of the Council of Ministers under Louis Philippe I.

[1] The presidential couple, Jean and Hélène, and their two children Claude and Germaine, moved into the Élysée Palace from the family home, Château de Vizille, on 27 June 1894.

Jean Casimir-Perier resigned just seven months after coming to power, giving him the shortest presidency in the history of the French Republic.

(French: C'est bien pourquoi je ne vous ai rien dit.