Forensics can now find blood that is not visible to the eye. It could be blood from years and years ago. They have great technology now, so if there is blood anywhere, they will find it! You are making some great points, and I agree with you.
As I stated above, the reporter says she doesn't think the DC Police think the guy in jail had anything to do with this, but I guess you never know.
I'm sure the DC police have to question the guy again to cover all their bases, (Hmmmm... I can't believe I said DC Police and cover all their bases in the same sentence)!, anyway, I'm in agreement with you and the reporter. This guy that's locked up sounds like a kook but not the kook they're looking for this time around.
As far as the blood, I know forensics are amazing. Don't you think though, that had she been shot, there would be a bullet hole in her clothing? There apparantly isn't one in the skull. And, if she were stabbed there would be a knife slash in the clothing and blood stains. Or had her throat been cut it would have bled terribly and I would think the naked eye could see stains even at this late date. Gruesome I know, sorry!