Of course you are entitled to applaud and use smilies as you like. I'm not responding to that part of your post.
This reminds me of that sliver of space between "beyond reasonable doubt" and "beyond all conceivable doubt." Of course, a 20-year-old girl being involved in this crime is not beyond the realm of all possibility.
But her age and gender are only part of the equation. Other parts include the facts that:
1. She has no history suggesting a propensity for this type of crime. A few practical jokes do not a crazed sex killer make. (Even Mignini seems to recognized this, as he gets vaguer and vaguer when trying to explain how the "prank" got "out of control.") AK has no history of violence, gang affiliation or even long-running feuds with other girls.
2. She barely knew one of her alleged conspirators (RG), having met him briefly once and seen him around town a couple of times.
3. She'd only known the other alleged conspirator (RS) for about a week. This is where the comparison to Karla Homolka falls apart. Moreover, in the cases of thrill-killing couples I can think of, the male always takes the dominant role, at least in terms of public performance. The AK/RS bond is supposed to be the opposite. Possible? Perhaps. Likely? Of course not.
4. She and her alleged conspirators didn't share fluency in any language.
5. She and RS had little if any time to form the conspiracy with RG.
6. AK managed to do a "magical" clean up in which she removes almost all traces of herself and RS from the crime scene (and all traces from RS' apartment except the magically discovered knife), yet leaves large amounts of RG's DNA.
7. The attempts to show AK's "consciousness of guilt" are laughable. She did cartwheels? She got upset looking at knives after her friends was stabbed to death? Give me a break. The fact is she didn't run, she stayed and aided the investigation.
8. Perugia LE and court system have demonstrated their incompetence every step of the way.
And yet the Italian courts paint AK not just as a foolish bystander caught up in something she didn't expect, but as some sort of ringleader of the conspiracy. IIRC, RG's sentence was reduced in part because the court ruled he hadn't delivered the death blow. How the hell can the court possibly know that? It can't, of course. It's just as determined as ILE and English tabloids to paint AK as the fount of all that is evil.