American Beauty? Please
Her claim of no DNA doesn't hold up. Assuming the two guys have subdued the victim all she had to do was take the knife and slash or stab. Assuming the three together had even half a brain between them they would have washed any trace blood off themselves (at least her hands) and there is no reason for her DNA to be on the knife (especially since they must have cleaned it)
At any rate, I believe the very simplest explanation is she was involved. To believe otherwise is too much of a stretch. I say guilty and extradite her. Don't play if you can't pay.
Yes, American Beauty. The stress of this ordeal took a toll on her beauty but still hot.