... Hrm.
Okay, here's what I have in mind.
[X] Plan: Make an Example of Her
-[X] Nigredo (1 -> 3)
-[X] Unerring Hunters (3)
-[X] Thunderous Command (5)
-[X][VICTOR] The Da Marini Problem
-[X][CLERVAL] It Can Think
So, what's the core of this plan?
Revenants
Revenants can pick up Ominous thanks to Unerring Hunters, which makes them fantastic trackers. Thunderous Command lets us coordinate them into a dragnet by giving Scheming to Zombies and Revenants (Which is the Coordination skill), and Revenants already have Inspired, which makes them able to Solve Problems. Plus, this bitch made a lot of dead that we can very happily avenge with their help.
Victor's our Necromancer Prime, and the one with the greatest understanding of how this works, Clerval is our Good Boi who can continue to help figure out Subject One's whole business, because we really want to avoid a redux of Frankenstein if we can, you know?