That is the supreme spiritual power she has been bestowed.
In Mikko's original world, this power could already crush all divine powers on Earth. Purely in terms of the quality and quantity of spiritual energy, it closely rivals Kikyo... Of course, referring to the former blank slate of the witch, not the current witch status.
Otherwise, the degree of enhancement would be too frightening.
At least Gu Mo couldn't achieve this; if he could effortlessly elevate an ordinary person to that level, he would have been a deity long ago.
However, it is precisely this powerful spiritual power that allows the girl's consciousness to conduct a macro-level observation on the scale of world lines, seeing the changes on a planetary scale. Without this strong spiritual power to be consumed on her behalf, she would need to overdraft her own life force and spiritual power to complete this process.
