Later on her voice got darker and hoarser and she put it to great use, specializing in playing sophisticated, attractive middle-aged women, like the role of Fioria in Do I Hear a Waltz?
Here is her solo number from Do I Hear a Waltz? (1965), "This Week Americans" (music by Richard Rodgers, lyrics by Stephen Sondheim). Playing Fioria, the worldly owner of a Venetian pensione, she welcomes her American visitors by attacking all the other nations; the character despises American provincialism but cynically plays up to it to make her guests happy. (Later in the production she attacks Americans for her latest round of English guests; this reprise isn't included here.)
And here she is on WKRP (the episode where she visits the station and gets drunk) singing "Someone to Watch Over Me":