He was a creature of the darkness and death, of the blackest of the nights ever was, and she knew that it was her duty to slay those abominations. As she is at the end of the opposite spectrum from he is.
As Ainz was one, she could not.
In this world, in the holy and unholy meet, where the law of pacifism is enforced very heavily by the world itself, she can just be Aqua, not Goddess of Water that is compelled to kill every abomination like Ainz.
(The first-day incident happened because she wanted to, not compelled to.)
When only she looked at his soul, she knew that he is not the abomination she thought he is. Only his aura and his body is, not his soul.
In a secret garden, only both of them knew, the flowers would wither and be painted grey in their presence, for they were not human, no, they are one of the most powerful beings in their respective world. Not able to step a foot on normal ground and not change it in any way.
From the black abyss, he stays where his underlings served him(no, they are my child, he said), and he reaches out a boney hand to her.
But she dares not take it.
