The mimicked clapping is a bit confusing, but in the end the trade is made and Jack is glad of it. He takes up the shell and bows slightly to agree that they have an accord. However, she seems to not yet be through with the pirate. He tilts his head curiously before cautiously moving towards her.
Jack is fairly certain that all of them have interest in eating him, but this one seems the most friendly of those seeing him as a meal. He'd rather oblige her than risk angering the lot of them. He moves closer and crouches down beside her.
"I don't imagine yer wanting t'grant me some manner of wish or favour, eh, lovely?" He knows she doesn't understand him, so there's no risk in his words.