Her continued research on how to modify human hosts led to devastating casualties in her slave populations, and she took to using the slaves of other System Lords - without their permission. Bastet and Kali, infuriated, managed to get Nirrti stripped of her System Lord status. By this time, however, the galactic empires of the Goa'uld were vast, and even while demoted, Nirrti had no trouble finding wayward human populations to perform tests on, and this was all the really mattered to her.