Barbara Sheehan acquitted after killing her husband
                                
                                
                                    (Newser) -
                                    A Queens woman has been acquitted of murder in a case the  New York Times  describes as a key test of the battered-woman defense. Barbara Sheehan admitted that she shot her husband to death in 2008. But she testified that she suffered such relentless abuse from the retired NYPD cop...