In apparent response to the woman's comment of 'mercy', the laughter takes on a more pointed timbre. Instead of being generic rumbles of unknown relevance, he clearly scoffs at the thought of Mitra's mercy. "Mercy, my left foot," he grumbles, before lapsing into silence.
Somehow, the sudden absence of sound is all the more obvious for it.
Spoiler: OOCAn opportunity for forgotten perception checks!
(1d20+3)[10]