As a foreign exchange student in Scranton, a girl from Nigeria was forced to live with ex-convicts, given only sardines to eat and was hospitalized for malnutrition and dehydration, according to her new host mother. A Lackawanna County grand jury is considering whether charges are warranted in the alleged neglect of nine foreign exchange students who lived with area host families. Meanwhile, the scope of the investigation has reached into Luzerne County, where the treatment of three exchange students is being questioned, said Teresa Osborne, Lackawanna County director of human services. The county office of Children and Youth Services is...