Location: 326, 38, 28 Up stairs on the 3rd floor.
Female version despawns at 8pm game time, then re-popped at 9pm game time.
If you kill the female version, you will take a -250 faction hit which will most likely make you KOS in the temple.
Male version spawns at 9am game time. This is the version you need to kill.
Upon death, a blazing elemental spawns and attacks.