In her early life she sold Superman figurines outside serial movies in Norwalk, Connecticut.

"[2] Zanuck had a long history of trying to turn his European mistresses into film stars – he had previously done this with Bella Darvi, Juliette Gréco and Irina Demick.

[3] Gilles' only movie, as the lead in Hello Goodbye (1970), was created and written by Zanuck, and was the first production he personally supervised since he inserted Demick in The Longest Day (1962).

She also claimed that Zanuck's son, Richard, influenced his father to remove her from his final will in October 1973.

[7] Zanuck's will was settled on January 8, 1988, after Gilles provided that her claim on the estate would be given to Yeshiva University in New York.