As far as I can tell no legitimate ransom demand was ever sent directly to the family and there have been several Hoax demands made.
In a kidnapping case the FBI is always called in and run the show, not local law enforcement. Kidnapping is a Federal Crime.
This whole investigation has been handled as badly as you imagine, seems high profile cases always are.
This woman is not alive and is probably buried in the desert somewhere. The only clue is the pacemaker. Why is not possible to track a signal from it somehow, if it can paired with a Phone then surely there is a way. Of course that would mean calling oil someone from the private sector that can figure something like that out.
The question is how much longer is this going to play out in the media?
All of this reminds me of a Kirk Douglas film from back in the 1950’s called Ace in the Hole https://www.imdb.com/title/tt0043338/?ref_=nm_knf_i_1
plot summary: Hoping to rekindle his dormant career, former journalist Chuck Tatum, now working for a local newspaper, exploits a story about trading post owner Leo Minosa who’s trapped in a cave, but rescue efforts soon blossom into a media circus.
The ransom note supposedly started by saying “Dear Savannah” and said they wanted 6 million USD..NO ONE says USD here in the US, so it might have been a Nigerian scam, reminds me of those emails I have in my junk folder “Dear Sir or Madam we need 50,000 USD immediately”
Thanks again, Captain!