Narcissa is breaking my heart. I want to be unsympathetic - but I know from canon that she really did love her family (she concealed Harry's not-dead-ness because he told her Draco was alive and she believed him!) and...

...and of course, when she loses Lucius (if, perhaps, only to Azkaban), and loses Draco (because he isn't coming back)... what will Barty do? Might that be the crack in his devotion to Voldemort?