Traven asks that an informant, Mucianus Allias, in the Ayleid Ruin of Nenyond Twyll be found and rescued. Further into the ruin the Hero encounters Mariette and at first she seems non-hostile and chats about the unfortunate circumstance that has fallen upon Mucianus. Towards the end of the conversation she starts talking about how foolish he was to cross the Order of the Black Worm, and how offering the Hero's head to her master would surely put her in his good graces.
She is fairly easy to beat and she has only two items of clothing and a few pieces of gold. She is the third of Mannimarco's lieutenants to be killed.
- May be related to Phane Rielle in The Elder Scrolls III: Morrowind.
- Depending on the Hero's Personality, Mariette may actually accept a yield from them, and stay nonviolent as they clear the rest of the Ayleid ruin.