Of her performance in Do Re Mi and later career, Bloom and Vlastnik wrote: "Confidently clowning alongside such pros as Phil Silvers and Nancy Walker...she never faded into the scenery.

[3] In 1978 she played the title role in Peter Pan at the Meldoy Top Theatre in Wisconsin and Sacramento Music Circus.

She also appeared in the City Center Gilbert & Sullivan NYC Company, directed by Dorothy Raedler, with such opera singers as Nico Castel, Muriel Costa-Greenspon, and Frank Porretta, Sr. Dussault took over as the Witch in Into the Woods on Broadway (1987–1989).

More recently she has appeared at The American Conservatory Theater in San Francisco as Mrs Peachum in "The Threepenny Opera" (1999) and as Toinette in Moliere's "The Imaginary Invalid" (2007)[citation needed] In Arthur Hiller's 1979 film The In-Laws, she played Carol Kornpett, wife of Alan Arkin who played Sheldon S. Kornpett, D.D.S.

Dussault played the pivotal character in the 1975 "The Courtesans" episode of Barney Miller (S1 E5), when creator/producer Danny Arnold threatened to quit his own show if network censors removed a risque line.