A witness who’s backing a woman’s child rape claims against Donald Trump also accused the Republican presidential nominee of sexually assaulting another, even younger girl.

Trump is due to appear in federal court Dec. 16 for a status conference after a judge allowed the lawsuit, which seeks $75,000 in damages, to move forward.

The alleged victim, identified in the suit as “Jane Doe,” claims Trump brutally raped her in 1994, when she was 13 years old, and threatened to harm her and her family if she talked.

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The suit was originally filed last year in California by a woman named Katie Johnson, but that case was thrown out May 2 because the complaint failed to properly state any specific federal civil rights violations.

The lawsuit was refiled in New York in June, but without Johnson’s name, her request for $100 million and absent several explosive claims from the previous suit — including an allegation that Trump had given money to the victim and ordered her to get an abortion.

Two other women — identified as “Joan Doe” and “Tiffany Doe” — have been added to the newer suit as witnesses.

Both witnesses say they worked as “party planners” for billionaire pedophile Jeffrey Epstein, who paid them to “attract adolescent women” to events he hosted at the Wexner Mansion in New York.

Tiffany Doe says in court documents that she lured Jane Doe to a party with the promise of money and meeting contacts in the modeling industry.

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She claims in the documents that she personally witnessed the girl being forced to engage in various sex acts with Trump and Epstein, who she said were aware of her age.

“I personally witnessed four sexual encounters that the Plaintiff was forced to have with Mr. Trump during this period, including the fourth of these encounters where Mr. Trump forcibly raped her despite her pleas to stop,” Tiffany Doe alleges.

Tiffany Doe said she also witnessed Trump forcing Jane Doe and a 12-year-old girl identified as “Maria” to perform oral sex on him and then physically abuse both of them afterward.

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The woman said her job duties required her to “personally witness and supervise encounters between the underage girls that Mr. Epstein hired and his guests,” according to court documents.

Epstein, a financier who was also friends with Bill and Hillary Clinton, was convicted in 2008 of soliciting an underage girl for prostitution and served 13 months of an 18-year prison term.

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Tiffany Doe said both Trump and Epstein threatened to harm Jane Doe if she ever revealed the physical and sexual abuse she endured — and she said the future GOP presidential nominee’s warning was particularly ominous.

“I personally witnessed Defendant Trump telling the Plaintiff that she shouldn’t ever say anything if she didn’t want to disappear like the 12-year-old female Maria, and that he was capable of having her whole family killed,” Tiffany Doe alleged.

Tiffany Doe said after she stopped working for Epstein in 2002, he threatened to kill her and her family if she ever revealed the child rape operation he oversaw.

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The woman, who started working for Epstein in 1990, said she had put herself at great risk by agreeing to back Jane Doe’s claims against Trump but swore her allegations were truthful.

“I fully understand that that the life of myself and my family is now in grave danger,” she said.

Donald Trump & Jeffrey Epstein Rape Lawsuit and Affidavits by davidbix on Scribd