Mrs. Malfoy always appreciated that Owls could find their recipients even in bizarre circumstances. As she was hiding out in Upper Slaughter, she had expected none of the deserved pomp and circumstance on her birthday. She was, however, surprised.
Despite the Owl's sweetness, Narcissa winced when she saw the locket. It had not previously occurred to her that the magic lockets she had worn religiously with Lucius for years would no longer be useful. The pair of necklaces had been their secret form of communication through his entire confinement in Upper Slaughter... but could not call the dead.
Ignoring the trinket from the Notts for a bit, she took her old locket in her hands, opening it and finding nothing. It was removed and placed on a table next to the new, shiny piece. Narcissa Malfoy wept, just as she had for days.