FORT WORTH - The U.S. government didn't offer a reward for the capture of Houston grandmother Elisa Castillo,nor did it accuse her of touching drugs, ordering killings, or getting rich off crime. [...] three years after a jury convicted her in a conspiracy to smuggle at least a ton of cocaine on tour buses from Mexico to Houston, the 56-year-old first-time offender is locked up for life - without parole.