The questioning stopped, and when Knox was asked if she wanted a lawyer, she said no, according to Donnino. Donnino repeatedly confirmed that Knox was never mistreated, and made her statements voluntarily.
Knox was arrested at the end of the night's interrogations.
In Italian courtrooms, defendants are allowed to make statements during their trial, and Knox stood today to refute the police depiction that they treated her well and that her statements were made voluntarily.
In a respectful but insistent tone, Knox said in clear Italian, "The witnesses are denying things about the interrogation. There were hours and hours that they don't talk about, during which I confirmed my story and there was an aggressive insistence on the text message to Patrick," she said.
Knox's defense has implied that the police badgered her to implicate Lumumba and that she finally gave in.
Knox has claimed in the past that she was treated roughly that night, saying the police rejected her explanations and accused her of lying.
And she added, "I am sorry, but I really was cuffed on the head."
Lumumba was arrested on the basis of Knox's statements, but was later released and all accusations against him were retracted, when no evidence of his presence was found on the scene of the crime. Lumumba is suing Knox for defamation.
Today's hearing was not only about Knox.
Police officer Daniele Moscatelli testified about the questioning of Sollecito on that same night. Moscatelli, who was present, said that Sollecito seemed "confused and nervous" during the questioning and said that police discovered that Raffaele was carrying a knife in his pocket.
Sollecito's knife was later ruled out as the possible murder weapon, but was considered important at the time. Moscatelli testified that Sollecito "said he was a fan of weapons and knives."
Moscatelli said that he removed Sollecito's shoes, in order to compare them to prints found on the crime scene, but returned them not long afterwards.
Sollecito also stood up in court to defend his version of events, telling the court that his requests to call his father or a lawyer were denied that night, and that he was left shoeless for hours, even when he was taken by investigators to his apartment for an inspection.
Sollecito was arrested early the next morning, based on what the police claimed was a match between his shoe and a print on the scene of the crime. This shoe print later turned out to belong to Guede.
The trial continues on Saturday, when the court will hear from police computer experts on what they found on inspection of the defendants' computers.
Zachary Nowak in Perugia contributed to this report.