"Significant quantity of the victim's DNA was present on his hands". Nasty.
Was the woman he assaulted drunk or something? If I was the woman, I certainly couldn't sleep while someone "laid a blanket over [me], unfastened [my] seat belt, unbuttoned [my] pants and assaulted [me] by touching" that area. I'd sort of wake up somewhere before the unbuttoning of my pants no matter how exhausted I was.
If someone unfastened your seat belt, unbuttoned your pants and made way to the underwear area, would you sleep through all of that? I guess some others can sleep through most anything. I certainly could not.