That's the way I understand that it went down.
Italy recognizes that they need to make drastic judicial reforms - they apparently went thru this back in the 1980s, but those earlier reforms didn't fully take since their judiciary resisted the reforms.
Recently, Italy started to once again reform their legal system, but apparently decided to reform their CIVIL code sections first before tackling their CRIMINAL code sections, apparently, because their antiquated CIVIL laws were scaring away foreign investment.
As for Amanda's conviction for libel/slander during her late night (unrecorded) interrogation, Italy's laws in that regards seriously needs to be amended.
While it may likewise be a criminal act in America to misdirect a criminal investigation, it seems like the lines were blurred by allowing Lumumba to pursue Amanda (civilly?) during her criminal prosecution?
I.e., logically how could Lumumba's attorney openly chastise Amandar as a 'SHE-DEVIL" during her criminal trial if Lumumba's part was only the civil aspect?
If Amanda was indeed CONVICTED of slandering Lumumba during the CIVIL portion of her trial, then how did her SLANDER conviction equate to a 3 year criminal sentence?
In America, a CRIMINAL trial can result in a prison sentence, but a CIVIL trial can only result in a monetary judgment! And, certainly both types of trials don't happen in conjunction!
Things are upside down in Italy, so venture there at your personal peril.
There is a seeming misunderstanding in your post, which may have its origin in a problem of translation and lack of information about Italian criminal law.
Amanda was convicted by Hellmann, and the conviction confirmed by the Chieffi CSC panel, of a
criminal charge: calunnia. The legal definition of the charge is (approximately): giving false information to the police or other judicial authority (such as a prosecutor or judge) stating that someone has committed a crime. Amanda was sentenced to three years imprisonment for this conviction, and it laid against time she had already served in remand.
In particular, Amanda was alleged to have committed calunnia because of her statements about Patrick Lumumba having raped and murdered Meredith, in her interrogation Nov. 5/6, 2007 and possibly also because her statements attempting to show she wished these statements to be considered unreliable, her Memoriales 1 and 2 of Nov. 6 and 7, 2007, were interpreted as additional statements against Lumumba.
The civil action against Amanda by Patrick Lumumba resulted in the assessment of a monetary payment from her to be paid to Lumumba.
Amanda has filed a complaint against Italy for allegedly violating her Convention rights for her conviction of calunnia. IIUC, the rights violated include her allegations that her statements were coerced by the interrogation techniques, including being threatened and slapped. But also, the interrogation was conducted contrary to ECHR case-law, in that she was not provided with a lawyer during the interrogation nor informed of her right to remain silent; nor did she have a lawyer's counsel during the initial days of her custody.
There is voluminous ECHR case-law in this area about persons convicted on evidence gained by violation of Article 3 (prohibition of inhuman and degrading treatment) and/or violation of Article 6.3c (right to a lawyer, including during interrogation or during custody); in such cases the ECHR has ruled that the conviction and trial was unfair - a violation of Article 6.1 - and that therefore there mus be a retrial or rehearing if requested by the victim, but strictly in accordance with the Convention. That is, the evidence collected through violation of the Convention must be excluded.
Amanda continues to face a criminal charge of calunnia for stating in court that she was threatened and slapped during the Nov. 5/6 interrogation. In fact, this criminal charge includes an aggravating factor, because she has repeated this allegation in each of her appeals. Interestingly, the ECHR generally requires that an alleged victim request that the alleged violation of rights be addressed to a judicial authority at each appeal. So here is a potential instance of a claim against Italy for interfering with the right to seek redress of a violation of a Convention right, which is itself a violation of the Convention and ECHR case-law.