Have been here since the beginning but unfortunately not able to give all the posts enough time to really assess all the detailed analyses of the timings, geography and witness evidence which I agree is important to this case. I admit I come at cases from an emotional viewpoint (and I think most people also feel this way about this case because of the very strong connection that Libby's tragic story has made with all of us). And I tend to focus on the perpetrator's psychology and what the crime tells us about him and what he is likely to go on to do. I am no expert and tbh shy sometimes shy away from the serial rapists/murderers because they are so disturbing. But they are hard to avoid among the podcasts and true crime shows that I watch and the investigations and how they are caught are fascinating.
I can remember being so relieved when Libby's body was found, chiefly for her family of course but also that it should help the case, which indeed it did. Of course it has always been common for many of this type of killer to place their victims in water (outside, or to put the victim in their own bath) to destroy evidence even before DNA. Or to prevent the victim being found altogether. Not something I like thinking about but the female body does have the ability to preserve DNA within the (virtually sealed) uterus which I am wondering if that is where the pathologist extracted the evidence from. So a rape conviction is a given as I am sure consent was not possible ( or likely) owing to Libby's dire condition at the time and also because I am totally confident that PR is a rapist and that was his intent which I think is clearly shown by his actions that night towards Libby and would be a common trajectory/escalation of his previous criminal sexual offending.
As to the murder charge, to me it makes more sense that PR put Libby into the river, than she just happened to end up there. Yes, drunken people often stumble into water but I don't know of another case where a rape victim has been known to do this. I think it is reasonable to assume that the rapist caused this in the pattern of the crime. And then you have the colossal amount of lies PR has told to fit the evidence, which strongly suggests to me that I am correct in assuming that he is lying about the totality of what he did to Libby.