Chapter 550: Cease All Hostilities.

She demanded menacingly. "Release him now."

Soverick rolled his eyes at her antics. "I'm doing it already."

It is not as if she can take him on. He doesn't have anything to fear about her so her facade doesn't scare him. She isn't pretending though. He knows that she will fight him again if he goes back on his word even though she knows she has little chance of victory. That is a good enough reason to give her what she wants. 

A desperate titan of law is not a titan of law to mess with. He has the raw strength to contend with her but her state of existence is above his despite it being imbalanced. She can decide to tip that imbalance towards chaos and burn all her essence for empowerment. Then she will become able to deal fatal damage to him if only briefly. Then she will die from exhausting her essence.