Born in Prato, Ferrati studied acting at the Accademia dei Fidenti [it] in Florence, graduating in 1926.

[1] She had her breakout working at the Teatro Eliseo in plays directed by Orazio Costa and Ettore Giannini.

[3] She worked on stage with prominent directors including Luchino Visconti, Franco Zeffirelli, Giorgio Strehler, Jacques Copeau, Max Reinhardt, Renato Simoni, Gianfranco De Bosio.

[1] In the 1950s and 1960s she had an intense television career, working with Vittorio Cottafavi, Anton Giulio Majano, Daniele D'Anza, Silverio Blasi, Sandro Bolchi, Mario Landi, among others.

[1][2] Her last appearance was in 1979, in the Augusto Novelli's comedy play Gallina vecchia.