Dufour also participated in the reading committee of Éditions Robert Laffont and collaborated with the Bayard Presse group and other magazines in the form of articles.
She is the author of numerous novels and biographies devoted to Calamity Jane, la Comtesse de Ségur, Cleopatra, Marie-Antoinette, Nero, Colette, George Sand, Marie Stuart, Sissi, la Reine Margot, Joan of Arc and Madame de Pompadour.
Hortense Dufour has been several times the guest of the emblematic TV program Apostrophes by Bernard Pivot.
She participated in several parts of the TV program Secrets d'histoire [fr] hosted by Stéphane Bern: Cléopâtre pouvait-elle échapper au suicide ?
The Prix Hortense Dufour - the godmother of the multimedia library of Marennes - was created in 2010 by the Lions Club of Marennes-Oléron [fr].