Enligt den här artikeln bekräftade GRRM:
the word brienne screamed was “sword”; lady stoneheart gave brienne the choice of either swearing her sword to her or being hung, saying “sword or noose”, and as brienne was being hung she screamed “sword”
Detta kan härledas från texten, eftersom George sade att Brienne fick valet av två ord i AFFC. Och vi
See her later on in ADWD, implying she said the word Lady Stoneheart wanted to hear.