Ith’dul can be first seen when approaching the main gate of the Rosymorn Monastery, in the cutscene where she together with Raider Add’ath is escorting several captured followers of Cult of the Absolute inside the Crèche for questioning.
After this cutscene, Ith’dul, again in pair with Add’ath, can be found guarding the area near the Trade Post of the Crèche.
If spoken to, she will tell the party that Captain is expecting them, and bid them not to waste time reporting to the latter. If the player character is a Githyanki themselves, Ith’dul will complain about the weapon that still hasn’t been found.
She will become hostile to the party if they choose to walk back through the Crèche after speaking to the Inquisitor and starting a fight with him.