Demagnez was a frequent exhibitor at the annual Salon art exhibition in Paris, and was one of only a few women whose works were juried into the show at that time in history.

[1] During a time in history when very few women ventured into the male-dominated world of bronze sculpture, Demagnez’s work was deemed to be of such good quality that she broke the barrier and was allowed to exhibit her work in what was at the time arguably the world’s most important art show—the annual Salon exhibition.

[1][3] Although perhaps best known for her World War I Memorial at Saint-Chaptes, she also produced a number of bust sculptures featuring prominent French citizens.

[4] Her circa 1895 stone sculpture entitled Mélancolie was described in 1902 by an art critic who said, "The work has delicate and thoroughly feminine sentiment, and is distinctly praiseworthy, albeit the execution shows marks of indecision and inexperience".

[6] Demagnez completed an important World War I memorial in 1919 that is now located in Languedoc-Roussillon, Gard, Saint-Chaptes, France, in the Town Hall Square.