The fallout from “a sexual battery” was so traumatic that it hindered Mr. Bennett’s work and income and threatened his mental health, according to a notice of intent to sue that his lawyer sent in November to Richard Hofstetter, Mr. Bourdain’s longtime lawyer, who was also representing Ms. Argento at the time.

Ms. Argento, who lives in Rome, subsequently turned to Ms. Goldberg — a prominent lawyer for victims of online attacks — to handle the case. (Mr. Hofstetter is now handling the estate of Mr. Bourdain, who killed himself in June. Although Mr. Bourdain helped Ms. Argento navigate the matter, neither Mr. Hofstetter nor Kimberly Witherspoon, Mr. Bourdain’s longtime agent and now a spokeswoman for his wife, Ottavia Busia, from whom he was separated, would comment for this article.)

Mr. Bennett’s notice of intent asked for $3.5 million in damages for the intentional infliction of emotional distress, lost wages, assault and battery. Mr. Bennett made more than $2.7 million in the five years before the 2013 meeting with Ms. Argento, but his income has since dropped to an average of $60,000 a year, which he attributes to the trauma that followed the sexual encounter with Ms. Argento, his lawyer wrote.

In October, a month before Mr. Bennett sent his demand for money, The New Yorker published an article by Ronan Farrow that included Ms. Argento among 13 women who accused Mr. Weinstein of harassment and rape.

Ms. Argento, whose father, Dario Argento, is a noted director of Italian horror films, began her acting career as a child. She went on to win two David di Donatello Awards, the Italian equivalent of Oscars, and has directed films, written a novel and recorded music.

After she spoke out about Mr. Weinstein, Ms. Argento quickly emerged as a powerful voice for women who have been mistreated by men. In May, she gave a riveting speech at the Cannes Film Festival in which she called the festival Mr. Weinstein’s “hunting ground.” She said he had raped her there in 1997, when she was 21.

The relationship with Mr. Weinstein continued for years afterward and sometimes included sex, The New Yorker reported. Ms. Argento, who had acted in a movie Mr. Weinstein produced, told the magazine that she feared angering him. It was a complicated situation in which she said she felt powerless. “After the rape, he won,” she told Mr. Farrow.