Mayorga claims Cristiano at Rain Nightclub in the Palms hotel in June of 2009 and he later invited her up to his penthouse suite. The woman, Kathryn Mayorga, and the Portuguese player reached a settlement at the time and she signed a nondisclosure agreement, according to reports.
Another attorney, Leslie Stovall, said neither he, nor Mayorga, who has left the Las Vegas area to avoid attention, would play out the case on social media.
The 33-year-old Juventus and Portugal star is the face of many brand campaigns, including for Nike and EA Sports's Federation Internationale de Football Association franchise, and took to Instagram Live on Wednesday to deny the accusations.
Las Vegas police have re-opened the complaint made by Mayorga, who is said to be suffering "psychological" damage from the incident.
She claims she received $375,000 in exchange for her silence.
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According to Mayorga, the Portuguese ace pulled her into a bedroom and anally raped her while she was changing, as she shouted "no, no, no".
Equally, early in the year, when Ms Mayorga underwent clinical examination, after considering ending her life, she was diagnosed with Post-Traumatic Stress Disorder, and depression.
In addition, one of her legal representatives, Larissa Drohobyczer also explained how Mayorga looked during his first visited the law firm.
EA Sports spoke with The Hollywood Reporter on the matter, saying, "We have seen the concerning report that details allegations against Cristiano Ronaldo". They contend that the agreement should be thrown out because she was not competent to agree to it at the time. Kathryn's lawyer told the media that she came out taking #MeToo movement as inspiration.
In a separate development, Juventus - the Italian club Ronaldo joined from Real Madrid for £99.2m in July - came out in defence of its player.
Santos said he expected Ronaldo to play again for Portugal eventually.