A tearful Carlota Prado shook her head slowly in disbelief with her hands clasped tightly as she watched footage allegedly showing the attack, which happened after an alcohol-fuelled party.
The footage, which was recorded in November 2017 but never been aired, has been leaked to the Spanish media, reports The Sun.
Ms Prado can be heard pleading: “Please, Super, stop now please.”
Visibly distressed, she paces back and forth across the room, later begging for the door to be opened so she could leave – only to be told to stay put.
In the alleged assault, more than two years ago, Ms Prado was helped to bed by fellow contestant Jose Maria, with whom she had began a relationship, after an alcohol-fuelled party at the Big Brother house.
According to footage of the incident, obtained by Spanish digital newspaper El Confidencial, Ms Prado tells Mr Lopez, “No, I can’t.”
But Mr Lopez allegedly got into bed with Ms Prado, at which point he is accused of penetrating her as she slept for several minutes.
It‘s claimed he stopped when he was interrupted by the show’s production team who spoke to him over a speaker.
The contestant was removed from the show later that day, and Ms Prado was sent to the diary room.
Here it is alleged she discovered what had happened.
Mr Lopez denies the allegation and his lawyer, Antonio Madrid, told the BBC he spent the night looking after Ms Prado because she was drunk.
Representatives of Zeppelin, the production company that makes Gran Hermano, reported the allegation to the police, although Ms Prado chose not to initially.
She spent several days in a hotel before returning to the show and later reported it in 2018.
Sexual assault under Spanish law is the equivalent of rape and carries a prison sentence of between 15 and 20 years.
Sexual abuse is considered a lesser crime.
Endemol Shine Group, the company that created the Big Brother format, told the BBC that the overnight production team reported the alleged incident to the show’s executive producers after they became suspicious.
The company also stressed they never intended to air the footage of the alleged assault, which was encrypted before being handed to the police.
Endemol admitted telling Ms Prado “in the diary room environment” was a mistake.
This article originally appeared on The Sun and was reproduced with permission