Augusta woman sentenced in killingEL DORADO — A 20-year-old Augusta woman was-sentenced Wednesday to 20 years in Lprison without parole for her part in her mother’s death last ^year.Jennifer Self pleaded no contest April 29 to first-degree murder. Self and her boyfriend were arrested after authorities found the body of rPatricia ASelf, 46, in the burned ’wreckage of the Self family’s \home near Augusta on March x19,2002. 1Patricia Self had been gstabbed multiple times with 5three different knives before alcohol was ignited to set the house on fire, authorities said. ^Death was attributed to head Trauma.The boyfriend, Joshua Robertson, was convicted last fall of first-degree murder, aggravated burglary and arson in the same crime. He was sentenced to 50 years in prison without parole.r