Naomi Biden, the 30-year-old daughter of Hunter Biden, testified that her father "seemed great, he seemed hopeful" when she saw him on Oct. 18 or 19, 2018, in New York, where she was returning his vehicle to him -- several days after he purchased the gun at the center of the case and just days before his then-girlfriend Hallie Biden discovered and discarded it.
Earlier, in August, Naomi Biden described visiting him in Los Angeles, where he was in a drug rehab program. "He seemed the clearest I'd seen him since my uncle died," she said, referring to Hunter Biden's brother Beau Biden.
It was important testimony for the defense in their attempt to show that Hunter Biden was not using drugs around the time of the gun purchase.
Defense counsel Abbe Lowell asked Naomi Biden about the car trip she and her then-boyfriend took from Washington, D.C., to New York in mid-October 2018 to return her father's truck -- a Ford Raptor -- to him.
On cross-examination, prosecutor Leo Wise asked Naomi Biden if she ever witnessed her father using drugs -- she said she had not -- or whether she would know if he was using drugs based on his behavior.
"I guess not," she said.
Wise also established that Naomi Biden did not leave any drugs or drug residue in the vehicle before returning it to her father -- suggesting that the drug residue and paraphernalia Hallie Biden observed in the car days later arrived there after Hunter Biden retrieved the truck.
Jurors also saw some emotional text messages between Naomi Biden and her father during that mid-October timeframe.
"I'm really sad, I can't take this," she wrote her father, adding that "I really want to hang out with you."
"I'm sorry I've been so unreachable," Hunter Biden replied. "It's not fair to you."
On the stand, Naomi Biden spoke quietly, at one point saying, "Sorry, I'm nervous." Her husband, Peter Neal, sat in the gallery next to first lady Jill Biden, and had his hand over his mouth for much of the testimony.
Hunter Biden appeared emotional and was seen at times touching his face during her testimony.
When her testimony concluded, she embraced her father before leaving the courtroom, and court recessed for lunch.