[1][2] In 1962, she was directed by Roberto Rossellini in the Beniamino Joppolo's drama I carabinieri, which was represented at the Festival dei Due Mondi in Spoleto.

[1][3] The same year, she made her film debut in Giorgio Simonelli's Il medico delle donne.

[4] Starting from the 1970s, Ubaldi was mainly devoted to voice dubbing;[1] for her work in this field she received various awards, notably a Nastro d'Argento for her dubbing of Gena Rowlands in Woody Allen's Another Woman,[5] and the 2012 Leggio d'oro [it] Award as best dubber of the year.

[6] She also dubbed many actresses such as Judi Dench, Maggie Smith, Anne Bancroft, Vanessa Redgrave and Jeanne Moreau.

[7] Ubaldi was also very active on television, appearing in numerous TV-series, notably Nero Wolfe, Incantesimo, Elisa di Rivombrosa, I Cesaroni and Suburra: Blood on Rome.