Renzi was offered a leading role in the next planned James Bond film, You Only Live Twice, but Renzi declined the role, commenting in an interview in Newark Evening News that "Bond pictures are good for pretty girls but not for actresses.

"[2] She turned down other roles, including an offer by director Orson Welles, due to her husband's jealousy.

She later featured with James Garner in The Pink Jungle (1968) as Alison Duquesne, and in the giallo thriller The Bird with the Crystal Plumage (1970) as Monica Ranieri.

In 1983, she was dismissed from the Bad Hersfelder Festspiele, a theater festival, for referring to President Karl Carstens, who had joined the Brownshirts in 1934, as an "old Nazi".

[1] In 2002 she staged a comeback in the play Amanda, which featured a monologue of a woman who emancipates herself after the death of her husband.