Regarding the jewelry, I'm not sure it would be Tara's. When I saw it, I was wondering if it could possibly be that of Peterson's wife (he did drive south for 'vacation' with the kids and several people speculated he was dumping the body or items that would incriminate him. Also, what was the lady's name that was kidnapped while speaking to her fiance by cell phone on her walk. That is quite mysterious. Hopefully the family this woman belongs to will know it's her soon.
Rachel Louise Cooke disappeared from Georgetown, Texas.
http://www.charleyproject.org/cases/c/cooke_rachel.html
The jewelry was found in Macon, Georgia. According to Mapquest, it is 16+ driving hours or about a 1000 miles. Tara Grinstead disappeared from Ocilla, GA. Ocilla is about 100 miles south of Macon.
The previous poster asked how far it is between where the jewelry was located and where Rachel Cooke disappeared. That's what the miles part was about.
Certainly, we should continue to look at options even if they are far away... there have been a number of cases where the missing person got a ride (or was taken) far away from where they started!