Maybe not guilty, but VERY creepy girl non the less.
Yes but not a sociopath. She likely has a form of autism called "Aspergers syndrome".
Knoxs lack of social skills, unusual reactions to emotion and lack of concern about appearance all common in autism spectrum conditions were clear to everyone who knew her:
Shes a little dork who doesnt wear matched socks, says her best friend, Madison Paxton.
[Sollecito said]: I noticed that her opinions on the music were odd. She didnt concentrate on the emotions it provoked but only on the rhythm slow, fast, slow.
And, like many autistic people, Knox was highly intelligent but also extremely naïve and gullible:
Shes the smartest person youd ever know but dumb as a rock when it comes to street sense, [her stepfather said]. In conversations with her friends and family, a portrait emerges of a person with a childlike innocence. She was, as her mother, Edda, puts it, oblivious to the dark side of the world.
Time.com:Could Amanda Knox Have an Autism Spectrum Disorder?
She was obviously innocent, but yes, a weirdo. Unfortunately for her, wrong place at the wrong time.