Amber Heard’s former assistant has accused the actor of exploiting her sexual assault story, and has testified in support of Johnny Depp in an ongoing trial.

Amber Heard’s former personal assistant claimed Wednesday that she told the model-actor about a violent sexual assault she had endured, only for Heard to “twist” the story for her own use. Kate James gave dramatic testimony at Johnny Depp’s libel trial against a British tabloid newspaper that accused the actor of abusing ex-wife Heard during their relationship.

Depp is suing News Group Newspapers, publisher of The Sun, and the paper’s executive editor, Dan Wootton, over an April 2018 article that called him a “wife-beater.” He strongly denies abusing Heard.

James, who worked for Heard between 2012 and 2015, gave evidence in support of Depp, and said she had told Heard that she was raped at machete-point in Brazil about 25 years ago.

She said she was shocked to learn that in a witness statement, Heard misrepresented and exploited the incident. “She referred directly to a violent rape that occurred to me 26 years ago and she twisted it into her own story and she used it for her own use,” James said by video link from Los Angeles. “I am a sexual violence survivor and that’s very, very serious to take that stance if you are not one,” she added.

Heard is due to give evidence in the case later this week. Heard, 34, has made 14 allegations of violence by 57-year-old Depp between 2013 and 2016, in settings including his private island in the Bahamas, a rented house in Australia and a private jet. He denies them all.

Depp and Heard give wildly differing accounts of their volatile relationship, which began after they met on the set of the 2011 comedy The Rum Diary. They married in Los Angeles in February 2015. Heard filed for divorce the following year, and the divorce was finalized in 2017.