(Portland, OR)  --  A Happy Valley woman is accused of stabbing her husband to death at an Oregon Veterans' Home in The Dalles.  Authorities say 70-year-old Esther Wilkinson is facing a murder charge in the death of 67-year-old Vietnam veteran James Wilkinson, who had lived at the home for about two years.  Police say a motive for the killing hasn't been established, but it's being described as an act of domestic violence.