LAS VEGAS (AP) — A Colombian husband and wife were sentenced to prison for leaving a mother of three die after botching her buttocks enhancement procedure in a backroom of a Las Vegas tile store.Ruben Matallana-Galvas (MAH'-tie-YAHN'-uh GAHL'-vis) and Carmen Torres-Sanchez apologized to the dead woman's family Thursday and asked for leniency before each was sentenced to three years and two months to eight years in state prison, plus one year in the Clark County jail. Each also was fined $12,000.Matallana-Galvas and Torres-Sanchez pleaded guilty in August to involuntary manslaughter, conspiracy and practicing medicine without a license.An autopsy showed 42-year-old Elena Caro died April 9 from an allergic reaction to anesthesia.Police arrested the 56-year-old Matallana-Galvas and 47-year-old Torres-Sanchez hours later at McCarran International Airport as they prepared to board a flight for Colombia.