The Priestess, also tentatively known as Baia, is a character from The Room Two, Chapter Three: The Temple. Most of the notes found during this level are written from her perspective.
The Priestess belonged to a civilization somewhere in South or Central America, and describes watching as her people were brought low by foreign invaders. Hoping to restore them to power, she consulted with crystals of the Null, which she believed to be a gateway to the gods and her ancestors. Through this, she was able to see glimpses into other times and places, and into the realm of the Null. However, she ultimately decided that the Null was not connected to her gods after all and would bring no salvation, and endeavored to seal it away.