Merchant Xenia is a human merchant currently selling surface food to the DorgeshuunCave goblins of Dorgesh-Kaan. Xenia plays a small role in The Chosen Commander quest, in which she is suspected of being an agent of the Humans Against Monsters movement. She notes rice as a food she sells, although rice is not found in the game.
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Merchant Xenia's examine text was originally "He sells 'exotic' ingredients to the cave goblins", rather than "She sells 'exotic' food to the cave goblins". This has since been fixed.
Xenia is the Greek word for hospitality. This may be a pun as Xenia in the game is suspected of selling poisoned food which is not very hospitable.