Wait.. so, she's a Kaiju and she's of normal size? Or is it like, she's a "monster"? or is it the huge fucking mommy milkers? Dammit, I NEED ANSWERS!
Detailed explanation:
Kaiju are creatures of pure negative energy which cannot be perceived by the naked human eye, nor can this energy interact with the material world on its own.
To interact with the world, they create vessels, of varying shape and size,
resembling the race they want to interact with diplomatically to infiltrate society and civilization,
or, the roughter idea,
create vessels of monstrous power and scale to destroy enemies outright.
if you kill the vessel, it just disappears, the real entity behind it is pure energy.