I'm woefully behind right now, the threads are moving so fast!
Since it's been so many days with no sighting of Jayme and basing my thoughts on the LE pressers and two thorough searches, it's looking more and more to me that the perp either has her holed up with him somewhere, maybe even still within the county, or he has her in some sort of wilderness situation.
I tend to think that if he is hiding out in the woods (for example) then by now someone, somewhere would have seen him buying supplies. Even if he planned Jayme's abduction in advance he would have had to stock up a lot of supplies, which could have caught a store clerk's attention. He'd purchase camping supplies, lots of water and food and maybe some telltale items like rope and duct tape. And it's getting awfully cold to be in a tent right now.
So is it possible he has her in a cabin that he or his family owns, as others have already suggested? If he's local then it could be mere miles away. Other cases tell us that often perps stay within their "comfort zone," meaning they don't stray too far from familiar areas.
Of course if he's not local then he could be anywhere. IMO LE does have strong leads that they're not sharing (or at least I hope so) but in any case it's been so many days since Jayme disappeared that I can't help but worry about her health and safety. I hope she's not out in some forest eating berries to survive because the selfish perp believes he somehow has a right to hold her hostage.
All this is my own conjecture, again based on pressers, searches and the length of time.
Bring Jayme home!