The fairy's name was Sage. Sage being a fairy she is also half-elf being a new ruler of the tree that connects between world between the dark and the light of the world.
Within the world that had seen the flow of what is happening within the other realities. Seeing that the universe is cracking and shattering throughout the world.
Seeing that the world is so much harsh and evil. There is nothing more but chaos and madness. Doling too much desire and power to hold the order of each world together.
Each flow of universes is the shift and flow throughout the world as we know it and seeing that John had met this guardian then he might be judged for his crimes of knowing too much for his own good.
Being a mortal, he is so what isn't important to live throughout the world and that world will surely not end well when a mortal put order into their hands. They mistreated and judge others without any consequence for their actions.