Sean “Diddy” Combs’ former live-in assistant didn’t back down as she was laboriously grilled Friday in Manhattan court over her explosive accusations that the disgraced music mogul repeatedly sexually assaulted her.

“Mia” – who testified anonymously as an alleged victim of sexual abuse – calmly repeated under cross-examination that she told the truth about Combs during her second day on the witness stand in the Bad Boy Records founder’s federal sex-trafficking and racketeering trial.

The ex-assistant also revealed more about Combs’ alleged rages, such as when threatened to throw her off a yacht because she took too long counting $100,000 in cash.

Combs’ defense lawyer Brian Steel tried to undercut Mia’s assertion that she was terrorized and traumatized by her former boss by dredging up friendly Instagram posts she made about the “I’ll Be Missing You” singer – and backhandedly accusing her of lying.

“Isn’t it true that Mr. Combs never had unwanted non-consensual sex with you?” Steel asked.

“What I said in this courtroom is the truth,” Mia responded. “I have not lied to anyone at all.”

The often-repetitive cross-examination came after prosecutors teased more workplace horror stories out of Mia, who worked for Combs from 2009 through 2017.

She contended Combs threatened to fire her and even kill her when she was on a trip with his ex-girlfriend-turned-star-witness Cassie Ventura in South Africa in October 2015.

Ventura found out Combs had cheated on her, prompting the billionaire to furiously try to reach her through Mia, she testified, detailing how he’d bombarded her with threats.

At one point, while Mia was asleep in a different time zone, she woke up to 48 missed calls and many texts from Combs saying “CALL ME NOW,” she recalled.

Combs, during a New Year’s Eve yacht getaway in St. Barts between 2010 and 2011, had also raged at Mia when she didn’t count $100,000 fast enough for his liking, she testified.

“You better learn how to walk on water like Jesus bitch. Get the f–k out of here,” she remembered Combs yelling at her.

The hounding continued years after Mia stopped working for Combs, as the mogul and his staff tried to reach her in the aftermath of Ventura’s bombshell 2023 lawsuit against hi — hounding her to publicly support him, she testified.

Steel spent hours combing through Mia’s Instagram posts, including one she posted on Combs’ 40th birthday with a photo of her in a tutu and another of him grabbing his crotch while they were apparently at the Burning Man festival.

“That’s the man who terrorized you?” Steel pressed.

“Instagram was a place to show how great your life was, even if it was not,” Mia responded.

Mia is expected to be grilled again by Steel when the trial resumes Monday morning. 

Combs, 55, has pleaded not guilty to charges that carry up to life in prison, if convicted.