Connie Silar sold the truck to Warren Gary, not Tabetha Crochet.
(Link no longer available, exerpted by me):
DORIS MARICLE; AMERICAN PRESS November 27, 2007
JENNINGS - A veteran Jeff Davis Parish sheriff's detective has been cleared of wrongdoing in connection with his purchase of a pickup truck that may have been involved in the slaying of a local woman.
The finding follows a seven-month state police investigation of Detective Warren Gary's purchase of the truck from an inmate. ..............
Gary bought the truck from Connie Siler, who had been arrested on worthless-check charges, after she was released from jail on March 30............