MILWAUKEE (AP) – A plea agreement has been reached in the case of a 76-year-old Sheboygan woman accused of killing her infant daughter more than a half-century ago.  Ruby Klokow is charged with second-degree murder in the 1957 death of her daughter Jeaneen.  Sheboygan County District Attorney Joe DeCecco  announced the agreement Thursday. He said he couldn’t provide details ahead of a plea hearing Monday, when Klokow’s trial was set to begin.   Klokow’s attorney, Kirk Obear, didn’t immediately return a call and email Thursday.   Klokow was charged after her adult son came forward in 2008 with stories of childhood abuse.  Her sister Judy Post says she is relieved there won’t be a trial.