Shaye Moss concluded her testimony after several hours on the witness stand.

Excerpts from a taped video deposition with Giuliani associate Bernie Kerik, the former police commissioner of New York City, is next on the docket.

Kerik worked with Giuliani to try overturn the results of the 2020 election. He received a pardon from then-President Trump earlier that year on felony fraud charges dating to 2009.

Shaye Moss grew so fearful for her life after threats poured in that she stopped going out in public, and only recently, she testified, did she build up the courage to leave her home alone, without security.

She did so at the behest of her therapist.

"That was actually her homework for me," Moss said of her therapist's request that she visit a public place by herself.

"I did once," Moss said. She testified that she drove alone to a local restaurant, where she found a quiet seat located at the end of the bar.

"I was so terrified. I felt extremely nauseous," she said. "I was very proud of myself. But unfortunately I have not been able to do that again."

Shaye Moss broke into tears under a line of questioning from defense attorney Joseph Sibley about the adverse health effects she attributes to Giuliani's defamatory statements about her.

Sibley asked Moss to repeat the names of two mental health diagnoses she received from therapists since the 2020 election. When Moss intimated that she had additional ailments that could be tied to Giuliani's conduct, Sibley asked, "What other issues do you have?"

Moss' attorney objected to the question. As the judge consulted privately with counsel from both parties, Moss held her hands to her face and could be seen wiping tears from her cheeks.

Shortly before this exchange, Moss said her mental anguish had been exacerbated by her inability to work. She described conversations with her therapist about taking time to heal before jumping back into a job.

"Before, I had purpose, at least," Moss said. Now, she said, "most days I pray God won't wake me up and I disappear."

Under cross-examination by Giuliani attorney Joseph Sibley, Shaye Moss was asked how she could be sure that it was his client's remarks that inspired throngs of strangers to level racist and vile threats against her and her family.

Moss said those strangers "were parroting his exact words."

She testified that right-wing news outlet Gateway Pundit and the Trump campaign used language similar to Giuliani's in smearing her.

"It was like the torch for the Olympics," she said. "They pass it from person to person to person."

Departing court after the first day of the trial, Rudy Giuliani told ABC News' Terry Moran that he has no regrets about his treatment of Ruby Freeman and Shaye Moss -- and he doubled down on his core allegations about them.

"When I testify, the whole story will be definitively clear that what I said was true, and that, whatever happened to them -- which is unfortunate about other people overreacting -- everything I said about them is true," Giuliani told reporters.

"Do you regret what you did to Ruby and Shaye?" Moran asked.

"Of course I don't regret it," Giuliani said. "I told the truth. They were engaged in changing votes."

"There's no proof of that," Moran responded.

"You're damn right there is," Giuliani retorted. "Stay tuned."

Court will resume Tuesday at 9 a.m. ET.