Her theatre roles saw her frequently perform opera with her contralto voice, for which she was highly praised.
Born in Utica, New York,[1] Bronti's early theatre roles saw her act as a member of The Beggar Prince Opera company.
[2] The 1907 production of Foxy Mr. Bowser noted Bronti's "beautiful alto voice" and commended her "portrayal of a strong-spirited woman and her well-cultivated musical voice".
[3] Throughout her early appearances, she was primarily used in minor parts for her contralto voice in opera-related scenes and choruses.
[1] She appeared in films directed by D. W. Griffith, Harry A. Pollard, Edward Sloman, and Wilbert Melville.