A woman who accused Harvey Weinstein of sexual assault said Friday she was not sure she could face testifying again if he is re-tried after his New York rape conviction was thrown out this week.

Mimi Haley said she felt "sick to my stomach" when she heard a court had voided the conviction of the one-time Hollywood power player.

"People don't know what I had to go through and what the other women had to go through," Haley told reporters of Weinstein's 2020 trial.

"It's grueling, it's hard... you're living in fear for years... and then you're getting harassed.

"There's so much stuff that people don't see that I had to live with."

Bombshell allegations broke against the Oscar-winning producer in 2017, launching the #MeToo movement that paved the way for women to fight back against sexual violence in the workplace.

Weinstein, 72, was convicted in 2020 of the rape and sexual assault of ex-actress Jessica Mann in 2013, and of forcibly performing oral sex on former production assistant Haley in 2006. He was sentenced to 23 years in prison.

On Thursday, New York's highest court ruled the trial judge erred in admitting the testimony of women who were allegedly abused by Weinstein but who were not named in the charges brought against him.

The office of Manhattan's district attorney has indicated it will seek a retrial, reports said, which would almost certainly require Haley to give evidence again.

If Weinstein is retried, Haley said he should still be convicted, even without evidence from so many other women.

"The truth doesn't change," she said.

"The evidence is still there, so I don't see why it would be another result."

Haley said she was still processing the development, but that she would consider taking the witness stand again.

"I definitely don't want to go through that again, but for the sake of keeping going and doing the right thing -- because it is what happened -- I would consider it," she said.

Thursday's ruling does not affect a separate 16-year sentence for rape handed down in California, and Weinstein remains behind bars.