Read the transcript from her testimony, already. It's easily found on the PMF site in the "In Their Own Words" section of the forum.
You mean like this testimony (emphasis mine):
[AK: Yes. Um, the interrogation process was very long and difficult. Arriving
in the police office, I didn't expect to be interrogated at all. When I got
there, I was sitting on my own doing my homework, when a couple of police
officers came to sit with me. They began to ask me the same questions that
they had been asking me days...all these days ever since it happened. For
instance,
who could I imagine could be the person who killed Meredith, and
I said I still didn't know, and so what they did is, they brought me into
another interrogation room. Once I was in there, they asked me to repeat
everything that I had said before, for instance what I did that night. They
asked me to see my phone, which I gave to them, and they were looking through
my phone, which is when they found the message. When they found the message,
they asked me if I had sent a message back, which I didn't remember doing.
That's when they started being very hard with me. They called me a stupid
liar, and they said that I was trying to protect someone. [Sigh] So I was
there, and they told me that I was trying to protect someone, but I wasn't
trying to protect anyone, and so I didn't know how to respond to them. They
said that I had left Raffaele's house, which wasn't true, which I denied,
but
they continued to call me a stupid liar. They were putting this telephone
in front of my face going "Look, look, your message, you were going to
meet someone". And when I denied that, they continued to call me a stupid
liar. And then, from that point on,
I was very very scared, because they
were treating me so badly and I didn't understand why. [Sigh] While I was
there,
there was an interpreter who explained to me an experience of hers,
where she had gone through a traumatic experience that she could not remember
at all, and she suggested that I was traumatized, and that I couldn't
remember the truth. This at first seemed ridiculous to me, because I
remembered being at Raffaele's house. For sure. I remembered doing things
at Raffaele's house. I checked my e-mails before, then we watched a movie.
We had eaten dinner together, we had talked together, and during that time
I hadn't left his apartment.
But they were insisting upon putting everything
into hourly segments, and since I never look at the clock, I wasn't able to
tell them what time exactly I did everything. They insisted that I had
left the apartment for a certain period of time to meet somebody, which for me
I didn't remember, but the interpreter said I probably had forgotten.]
From another section:
[CP: Listen, in this memorandum, you say that you confirm the declarations you
made the night before about what might have happened at your house with
Patrick. Why did you freely and spontaneously confirm these declarations?
AK:
Because I was no longer sure what was my imagination and what was real.
So I wanted to say that I was confused, and that I couldn't know. But at
the same time, I knew I had signed those declarations. So I wanted to say
that I knew I had made those declarations, but I was confused and not sure.
CP: But in fact, you were sure that Patrick was innocent?
AK: No, I wasn't sure.
CP: Why?
AK:
Because I was confused! I imagined that it might have happened. I was
confused.
CP: Did you see Patrick on November 1, yes or no?
AK: No.
CP: Did you meet him?
AK: No.
CP:
Then why did you say that you saw him, met him, and walked home with him?
AK: Because the police and the interpreter told me that maybe I just wasn't
remembering these things, but I had to try to remember. It didn't matter if
I thought I was imagining it. I would remember it with time. So, the
fact that I actually remembered something else was confusing to me. Because
I remembered one thing, but under the pressure of the police, I forced myself
to imagine another. I was confused. I was trying to explain this confusion,
because
they were making me accuse someone I didn't want to accuse.]
http://www.perugiamurderfile.org/viewtopic.php?f=8&t=165&start=0
I'm not a cheerleader for Knox. Maybe she lied at her trial. I'm just observing that without a recording of the interrogation no one can be sure. The transcript also shows entries where the lawyers and translator debate the meaning of words and phrases. I doubt that the cops in the interrogation room were quite so scrupulous.