Also note that you will be unable to pledge to Shiritri if you have already killed a monster flagged as being under her domain. The Voice of Shiritri on the Isle of Voices will tell you off with a message to the effect of, "You are an affront to all that my deity stands for! Begone!"
Unlike with some of the other deities, I don't believe there are any mobs flagged (Shiritri) other than those in her home plane of Tasineth, a.k.a. Plane of Air.
Only Shirtri mob I can think of outside Plane of Air is maybe the high elf Shiritri quest aug npc in First Ruins, hell she may not even be Shirtri flagged though it's an old quest.
I remember a raid wiping and the charm-eater, ie some garbo melee personage, being left there in Tasinath for the night. I laughed a lot. Especially at the log out, log in attempts and my lifeburn mitigating by half so it was just a hair too small.