At the Art and Industrial Exhibition of 1876, she met and became acquainted with Elisabeth of Wied, the Queen consort of Romania (perhaps better known under her literary name "Carmen Sylva").

In addition to oil paintings and book illustrations, she also created fresco murals in the Music Hall of Peleș Castle in Sinaia.

After 1880, she lived in Paris, where she studied with Luc-Olivier Merson, Gustave Courtois, Jean-Joseph Benjamin-Constant and Eugène Carrière, who had the most influence on her style.

She founded a women's art school in 1894, operated a studio and struck up a friendship with Käthe Kollwitz.

Hitz exhibited her work at the Woman's Building at the 1893 World's Columbian Exposition in Chicago, Illinois.