WMG / Breach: Archangel Series

Tracy is the mole for the cartels.

If you stole a kitten for yourself then right before the existence of a mole is revealed it hides from Tracy behind you, when it's never been shy with anyone before that. Your kitten can sense the traitor on her! She's also noted as being the one person outside of Gabrielle's crew involved in handing passing out everyone's new, extra secret, safehouse locations, and gets let in on where the Trio and the MC's crew are staying as well, so all their paranoid attempts to get everyone fully underground will fail.