Because she's not, in fact, made out of Him. They are both instead made out of a secret third thing, that lives everywhere, that they would both possess if the other had never existed.

Towers, and children playing, and libraries, and Gates, and treaties, and every impulse in every person for something better than this -

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Iomedae, paladin of Aroden; and all we do may be undone; lintamande

Dear, oh dear. What was it? The Hunt? The Blood? Or the horrible dream? Oh, it doesn't matter... It always comes down to the Hunter's helper to clean up after these sort of messes. Tonight, Gehrman joins the hunt...
- Bloodborne