Authorities in western Minnesota say a 30-year-old Milwaukee woman tried to kill a state trooper after a traffic accident.  Melody Gray has been charged with attempted murder.  She’s accused of holding a handgun to the head of Trooper Mark Peterson and trying to pull the trigger, but the gun didn’t fire.  The trooper was trying to handcuff a passenger in the stolen car Gray had been driving before it went out of control on I-94 in Moorhead.  Trooper Peterson shot her in the arm.  Gray and 29-year-old Dominique Crayton have several outstanding warrants in Milwaukee for charges including kidnapping.