It seems some nefarious figures were interested in Nahida for... Malicious reasons, more specifically, they wanted information only the Goddess of Wisdom, Lesser Lord Kusanali, would undoubtedly know. So, with a stroke of luck they managed to capture the tiny Archon and set her up in one of most effective interrogation devices for cute girls... A tickle torture machine, in this case, a tummy tickling machine... Unfortunately for Nahida, she won't be lasting too long with this tummy tickle hell, and being an Archon meant the people didn't need to give her any breaks, so she has no option but to suffer as she spills all the information that these sick people want. Even then, I highly doubt they will let Nahida go like that even when she gives them all the knowledge in the world...