Devi is a young girl, who, despite her apparent youth, works as an illegal moneylender, or gaelet, in Imre. She is a former member of the Arcanum, and as such demands some blood from her customers, which she uses as collateral. Kvothe borrows money from her several times, and somewhat of a friendship develops between them.
She is known to miss having access to the Archives, offering Kvothe large amounts of money and even sex in order to coax his alternative entryway out of him. She has some experience with being a healer, as she stitched Kvothe's wounds after an attempted murder (or mugging).