Thanks for the clarification. But if he had truly just dropped her off, what are the odds that YZ would then almost immediately encounter a second person with a strong interest in kidnapping? Astronomical. I personally think that the "other evidence and facts" or however it was worded in the affadavit that led LE to believe her dead, which has not been made public yet, is probably irrefutable. Definitely JMO.
I don't disagree that he is the likely culprit. I just hope there is some physical evidence to show that A) she was in distress while in his car (to support kidnapping charge) and B) she was at his home (to support their surveillance). If not, the case will be extremely tough to prove against his narrative that he picked her up and dropped her off. A good lawyer can spin anything.
JMO.