That would be a very peculiar position to take, given the fact that the court that convicted her in the second instance (affirmed by the supreme court) held that she was a suspect.
In addition, the ECHR might be rather interested in that infamous statement from Perugia police chief Arturo de Felice in the horribly triumphalist press conference held on 6th November 2007:
"Initially the American (Knox) gave a version of events which we knew was not correct. She (then) buckled and made an admission of facts that we knew were correct and from that we were able to bring them in."
There are only two possible ways to interpret this statement. Either 1) de Felice was lying when he said these words, or 2) the police clearly suspected Knox of criminality prior to the point at which she "buckled" and made the notorious "confession/accusation".
I think it's easy to conclude - based on this and other evidence that's already been discussed here - that the police did indeed suspect Knox of criminal activity prior to the commencement of her interrogation on 5th/6th November 2007. Whether that suspicion was that Knox aided and abetted the murderer (and lied to protect him) or that Knox directly participated in the murder, she should clearly have been cautioned and provided with legal counsel prior to any questioning.
And (broken record time) the ECHR might also take note of the report from the European Criminal Bar Association about abuses of suspects' rights in the Italian system. The ECBA report explicitly notes an institutionalised tendency amoung Italian police and prosecutors to deliberately hold back on applying the official categorisation of "suspect", precisely in order to be able to squeeze confessions out of people while not cautioning them and being able to deny them access to legal counsel (plus not having to record the interrogations......).
There are several facts and documented statements that establish that Amanda and Raffaele were suspects before the interrogation of Nov. 5/6 began.
1. The nature of the interrogation. It was scheduled for overnight with a crew of police doing overtime. This required it to have been planned probably at least the day before (that is, Nov. 4) so police could clear their schedules.
2. Giobbi testified that he had planned the interrogation of both Amanda and Raffaele as a simultaneous interrogation.
3. The interrogation was of an intense nature. Giobbi and others reported that Amanda was screaming and crying for help, although Raffaele carried on like a gentleman. This is not typical of a police interview.
4. Amanda was invited into an interrogation room by one of the police. She was not a the station to volunteer further information. She was at the station, from her point of view, because she did not wish to be alone; she followed Raffaele, who had similarly accompanied her when she had been interviewed at the station on previous days.
5. There is apparently a statement from one judge (Matteini) that the anticipated arrival of Amanda's mother on Nov. 6 motivated Amanda's arrest as a precautionary measure (posted earlier by Samson). Obviously, the police needed some excuse to arrest her; thus, the interrogation.
6. Amanda reported being threatened, yelled at, and slapped. These are not measures associated with an interview.
7. The police chief's statement that Amanda had
buckled and told the police what they already knew. If this is an accurate translation, it indicates that Amanda was interrogated; to buckle in this context means to bend and give way under pressure or stress (like an overloaded bridge column). Interestingly, to force statements from someone against his/her will is against Italian law, CPP Article 188: Methods or techniques which may influence the freedom of self-determination or alter the capacity to recall and evaluate facts shall not be used, not even with the consent of the person concerned.
8. The actions of the "translator" Donnino as a "mediator" were likewise contrary to CPP Article 188, and apparently she testified to some of her method to influence or alter Amanda's memory in court.
9. Hellmann indicated, in the verdict convicting Amanda of calunnia and which was finalized by the CSC, that she had made the calunnia statements
to relieve the pressure of the interrogation, and not to hide her participation in a crime. He stated that she was under suspicion of very serious crimes.
The above list may not be all-inclusive, but IMO it establishes that Amanda was a suspect when the interrogation began, and should have been provided a lawyer and warned of her right to remain silent. Certainly, as soon as the statement about Patrick had made by her, or made for her by the police, she was entitled to a lawyer.