Kanaya's lusus apparently died of natural causes, as a Mother Grub who renounces brooding has a more limited lifespan. Kanaya believes her death, and by extension the deaths of the other lusus, are not an effect of the Mobius Double Reacharound Virus, as Karkat and Sollux believe, but instead are a consequence of playing Sgrub. After she dies, Kanaya saws open the abdomen of her lusus, removing a mysterious sphere covered with what look like troll horns called a Matriorb, which can be used to create a new Mother Grub. Doing this is part of Kanaya fulfilling "her end of the bargain".