AP EDINBURGH, Scotland – An American woman living in the sphere of Scotland on Monday acknowledged stabbing her three children to death amid a arrest battle with their father.Theresa Riggi, 47, pleaded guilty in the sphere of an Edinburgh patio to to blame homicide on the argument of diminished dependability.Her lawyer, Donald Findlay, believed she was torment from narcissistic, paranoid and hysterical personality disorders and acute stress.She had originally been charged with assassination 8-year-old twins Austin and Luke and their 5-year-old sister Cecilia.The childrens bodies were found happening imposing later than a chat explosion by their Edinburgh public housing. Their look after was hospitalized with falling or else jumping from an upper-floor terrace.