She laughs, at his reply, particularly the part about killing Tiamat. "Such presumptions, mortal," she says, with a booming laugh, though it starts to fade, as she senses his seriousness. "You... you can't be serious," she says, clearly doubting his claim. "What's in this for you? Why would someone with as much power as you claim bother with these... mortals?" She seems to have ignored the game, to pay attention to their conversation, though she still moves pieces idly, almost at random.