Even more important to me is that there was none of her bodily fluids found in the bathroom- if such a rape really occurred, it is hard to see it happening without any blood or vaginal fluids both in the bathroom or on her clothing.
Yes, that is significant. I was just saying that the nail doesn't help the prosectuion at all, if you have a brain. No blood, first of all, but if there was truly this violent attack, and you concocted some crazy explanation as to why your supersensitive DNA test could not detect any on her or on the scene when they were examined shortly afterwards, that explanation is blown our of the water if it turns out that the nail in the garbage has the dna from multiple sources. The better conclusion, in fact the only conclusion, is that the nail picked up dna from multiple people from casual contact. If you read DNA testing protocols, they instruct the investigators to be extra-careful of contamination, wearing gloves and so forth. One would expect then that a half hour long violent rape in an enclose space would leave some trace.
You're absolutely right. No trace of the victims sexual fluids in the bathroom. Hell, that's on CSI every other week.