While Vaan was interacting with Hecate, the leaders from the human, witch, dragon, and wyvern sides all maintained their distance. No matter what Vaan and Hecate were discussing, they didn't believe they were qualified to join in.
Who would dare jump into a Great Devil's conversation before permission was granted?
As such, Astoria and Henrietta's first thoughts were to seek information about the situation from Ophelia. However, the latter found it extremely inappropriate to interrupt Hecate for a sudden inquiry.
In the end, everyone could only wait patiently until Hecate and Vaan finished their business.
When everyone witnessed Hecate's sudden surge of evil aura, they all felt fortunate for deciding not to approach her and interrupt her business.
As expected, a Great Devil was still a Great Devil.