I'm surprised there's no mention of a dog picking up the scent of a cadaver.
Or, I should say, if a dog did pick up a cadaver scent, why wouldn't it be in the AA? It would go a long way toward convincing me/us/a jury that he died at home.
The affidavit isn't to convince you, me or a jury.
It has one purpose: to convince a Judge. To issue an arrest warrant. Some states use Grand Juries (relatively rare, I think) but most states just require that the DA come before a judge and give probable cause for an arrest. Probable.
Often, a judge will speak to the prosecutor in chambers, and more information than is in the affadavit can be presented orally if the judge has questions. In this case, I'm sure the judge was quite convinced a warrant was deserved, but could still have asked some questions of the prosecutor (So, what's your theory about a weapon? or Has this woman been in trouble with the law before? Or have you looked into their financial situation yet?) Judges can ask anything they want. It helps convince them and they don't usually ask for the AA to be rewritten, they just sign the warrant.
Same thing at preliminary hearing, since obviously, some of the evidence may not be admissible, according to that judge. But s/he is sure as heck going to hear all of it, including things that make them shake their head or make them nauseous, and it may not go into the preliminary open hearing, as the judge has to research and think about what can be made public.
Now that there's an autopsy, the judge will certainly have some questions for the defense in his/her chambers (with DA present, most likely) before the preliminary hearing opens up. It might just be a short consult to get everyone on the same page about avoiding certain prejudicial information. For example, no one gets to mention LS's hair.
I was joking with that last statement, but have occasionally been invited in chambers to speak to an affidavit I'd done, during the preliminary phase (in California, not Colorad0). Certain defenses are often disallowed in the preliminary phase (for example, if a person is going to claim their religion made them do something awful, and that's their defense, judges are pretty skeptical about allowing testimony - as there are few experts and people don't just get to claim that their faulty moral system made it okay for them to beat someone or rape them or kill them).
If I'd been the judge, I'd have asked where the heck LS had gone and when and why. If the answer is, "She left the state and eventually ended up in South Carolina, we have no idea why." If, in the course of that discussion, I learned she'd taken a moving van, that would make me lean waaaaay toward an immediate arrest warrant, in the context of everything else in the AA.