POSTED: 6:55 pm CST December 21, 2005 UPDATED: 8:00 pm CST December 21, 2005 AVOCA, Ark. -- Authorities say a 13-year-old Hometown boy was exposed to HIV when he was allegedly raped by a 42-year-old woman in his own home. Deputies thought they were headed to a domestic disturbance call at the teen's home near Avoca at about 2 a.m. Monday, and they found two men arguing with a woman named Donna Sue Mars. However, during subsequent interviews, police said one of the men said Mars had sex with his 13-year-old son. Officers confirmed that the boy said Mars forced...