While hoping and praying Brittney is alive and well, I also have a wild theory in my head that she was intending to eventually head to Grand Bay Area for some reason. All speculation, based on her drug of choice: methamphetamine. Suppose she hitches a ride from one of her other two uncles or brother to STYX River area to "make a transaction" with Uncle Donnie for some prescription pills, which she was planning to take to Grand Bay Area to make a transaction for meth. Suppose her driver and Donnie had a confrontation that ended up with Brittney in the crossfire. As a coverup, her driver continues the original plan to Grand Bay, and somewhere along the way, or afterwards, disposes of Brittney. If I'm not mistaken, I believe one of Brittney's brothers was in jail at the time, the other not. Would explain Chessie's inconsistent statements, mourning the loss of Brittney while trying to protect son (maybe brother(s)) for a perceived accidental death during an illegal transaction.