Board Thread:General Discussion/@comment-1255374-20150914030804/@comment-26066301-20150915165045

Vgiannell5 wrote: Cynthia149 wrote: the more worms Shredder added into Karai must've been eaten by the one that Karai had already installed, and had now been thrown up at the end as such a big fat thing. This sort of cannibalism does exist in the animal kingdom with worms and maggots and such. Doubtful, Baxter Stockman probably made some adjustments to them so they won't get eaten by the first brain worm.

But when Splinter used the healing mantra on her, it was revealed that there was only one worm in her head.