(Portland, OR) -- A 30-year-old woman has been sentenced to 22 years in prison for fatally stabbing a Radio Cab driver last year. Surveillance video in the cab showed Moses Lopez stab Reese Lawhon in the neck. Medical personnel saw Lopez leave the cab dropping what appeared to be brass-style knuckles with an attached blade. Lopez pleaded guilty to first-degree manslaughter and unlawful use of a weapon.