“Never accept a gift from a Faerie, and if they give you one by force, do not, under any circumstances, thank them for it. It implies gratitude, and that is something they can use to call upon a debt in the future. If Mab gives you a gift, you are not to be grateful for it. You are to remain indifferent, even if she offers you water when you’re dying of thirst. Do you understand?” Imelda said as the door opened.
