I went back and reread the FTL post, memory getting hazy. A few things we have been asking:
1) From the way it is worded, the Skyping ritual comment did not likely come from SC. The info from SC was all noted and along with comments about him, but the Skype comment was different. The "call" he made was long and at 2AM his time and 5 AM her time. I doubt he would have volunteered that to the family. That's 6 hours of mystery time between 8PM and 2AM.
SC was possibly seen in a vehicle not his own in Hana, dozens of miles past Keanae, late at night.
2) The family went to Mana Foods to talk to him at 8 AM Tuesday. (The police had come by his house and woke him up at 5:3-6).
3) SC went down the road near where clothes were found twice, on Tuesday 2/11.
4) At first he had no idea when he last saw her lights. Then it was Ulalena Rd. Then it was Twin Falls. From the post, he was definitely telling a story that led to a conclusion she was abducted while driving.
5) Mentioned SC is a career thief and a lock-picker.
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A few thoughts from this:
1) He could have picked the lock at her place if he did not have a key, could have lain in wait inside.
2) Back to the original take on her clothes being found and the phone ping: sometimes the first take is right. He wanted the clothes and that location to be found as proof to LE that she died -- at the hands of a serial killer/psycho. He never planned for her to be forever in "missing" status like Laura Vogel or Moreira Monsalves. This evidence would be found and they would close the book, bury the case because Maui depends on tourism and cannot have a serial killer.
But Nala ruined that whole charade. Nobody at all bought the idea of a serial killer transporting an unharmed Nala. Is it possible that Nala was so mildly behaved with SC that he forgot people would think Charli was too well protected being with Nala? I don't think he expected Nala to be found and returned, but perhaps did leave her in Nahiku because there were people and someone would find the dog (and keep her).
We discussed all of this last year, but the serial killer idea was discarded so quickly it's not mentioned much now. At the time, a lot of media comment sections had support for the idea of a killer on the loose -- until Nala was found and then boom, it was all eyes on Steven.
Why would he go on past Nahiku to Hana (if the sighting was accurate)? Could he have had a spot in mind for disposal, far from both Haiku and where he left her clothing? FTL says he knew all the east side very well, all the accesses, even gated ones.