@ Dougm:
In addition to the above, and in relation to it:
I have seen much discussion - on the part of a few posters - on pmf regarding Amanda being possibly lesbian. Her late dating, her history of being a tomboy and her father's "son" (see Nina Burleigh text), her relationship with Madison Paxton, her lack of makeup and simple dress are all cited.
So this is the flip side of examining character and likelihood, as well as evidence. I think their theory is:
She identified with males, may have shared in Sollecito's paraphelia, and subsequently on an unconscious level, had an interest in a sexual attack on Kercher. One this ideation was activated, murder became a real possibility.
It is a seductive theory, psychologically, for those who presume guilt. One can look at Karla Homolka and various other females to back this up, and from such a purview, it becomes not only possible but highly probable that Knox was involved. I am trying to reveal the mechanism of such thinking. I was bought into this seductive theory,
until enlightenment regarding the facts made a clean sweep of it.
The thirst for Bernardo to share his rapist activities with his lover Homolka increased. On June 15, 1991 Bernardo kidnapped Leslie Mahaffy and brought her to the couple's home. Bernardo and Homolka repeatedly raped Mahaffy over a course of several days, videotaping many of the assaults. They eventually killed Mahaffy and cut her body into pieces, encased the pieces in cement, and threw the cement in a lake. On June 29 Mahaffy's remains were found by a couple canoeing on the lake.
http://crime.about.com/od/murder/p/homolka.htm