The autopsy report also states that Rebecca had her eye makeup tattooed on; not that she couldn't use the makeup remover for other makeup that she was wearing, but I found that interesting, especially now that we have makeup remover in the guest house.
Regarding the lack of AS's DNA on the rope- do we know for sure that he simply reached up quickly and cut her down? I don't know that we do. I'm envisioning him finding the body, running to her, possibly touching her and/or the rope in an attempt to get her down, running in for a knife, and then...what? He stands on the table- does he let her drop to the ground? Does he prop her up on himself? I can definitely see a scenario where there could be DNA and fingerprints all over her and the rope. Of course, that in and of itself wouldn't be suspicious- he cut her down. The lack thereof does give me pause.
Regarding the message, the placement of it is kind of strange to me. Disclaimer: I know we can't apply logic to suicidal people, but I am not sure how else we'd examine such a case. Presumably she knew JS wasn't coming home- she had the voicemail and was also going to bring him clothes. That leaves AS. I am unclear on the layout of the grounds but wouldn't she realize AS would find her outside? That no one would first find the door message/be able to "save her", if that were ever her intention? Who did she think would first find a message on that door who wasn't first going to find her outside? This is, of course, assuming she wrote it, which I don't believe she did. But it's almost as if it were intended for someone who would be looking for her via the main house, which wouldn't be AS given what we're told, and wouldn't be JS, at least not for quite some time. Things that make you go hmmm.