3 >>>eve russo: a soldier.. who was convicted of working with his teenage girlfriend to kill her mother..will be sentenced at a hearing this afternoon. last month.. caleb barnes was found guilty of first-degree murder for the death of cheryl silvonek. the conviction comes with a mandatory sentence of life in prison. prosecutors say barnes and 14-year-old jamie silvonek killed cheryl because she didn't approve of their relationship. jamie was ?also? convicted of the crime. she's currently behind bars for her role in the murder...but she