The more relaxed Hudson spoke, the more fearful Isabel became. If undead magic was easy to neutralize, necromancers wouldn't have such a prestigious reputation now.
"Sir, rest assured! I will definitely handle this, I absolutely will not let you down!"
...
After seeing off Isabel, Hudson assumed one more role— that of a "necro magician". The question was whether he could bluff the mysterious organization behind the scenes.
Unfortunately, Isabel was too clever. Even after joining the mysterious organization, she refrained from prying into matters she should not know about.
Just some cursory information was enough for her to point her doubts towards the Church, demonstrating a high level of analytical ability.
The truth behind the scenes, until the moment it is revealed, no one knows who the true culprit is.
For top powers, causing mischief under someone else's alias is nothing unusual.