[Her expression hardens then. Though she's still a bit unsure and even worried about Nami's presence, she has taken a liking for the woman. So not only because she's Luffy's precious crew-mate, but also because Hancock appreciates somehow the woman, she wants her back to her home and safe.]

Be careful, Luffy. And if possible bring back his head so we can drive it into a stake in the square, he could very well serve as an official warning that your crew is not one to make enemies with.