After retiring from performance in 1930, she devoted herself to teaching singing and managing the career of her husband, baritone Mariano Stabile.
[1] She made her professional opera debut in 1909 as Mimi in Giacomo Puccini's La boheme at the Politaema Marengo in Novi Ligure.
[3] For two decades Bosini actively performed in opera houses throughout Italy, and was most frequently seen at the Teatro Massimo in Palermo where she made her debut in 1915 as Antonia in The Tales of Hoffmann.
She also gave performances at the Cairo Opera House and the Teatro Colón in Buenos Aires as Alice Ford in Verdi's Falstaff.
Other roles she created on stage included Cio-Cio-San in Madama Butterfly, Desdemona in Otello, Elsa in Lohengrin, a flower maiden in Parsifal, Hanna Glawari in The Merry Widow, Maria in Guglielmo Ratcliff, Margherita in Mefistofele, Marguerita in Faust, Micaela in Carmen, Nedda in Pagliacci, and the title roles of Giordano's Fedora, Mascagni's Iris, Massenet's Manon, and Puccini's Manon Lescaut and Tosca.