There's perks to holding a certain position with the herd's law enforcement. Namely, access to information regarding recent crimes. The girl who'd been a cat? She's gone. But any cop worth his salt would keep an eye on the surviving girl after a case like that. That's what Tristan's counting on.
Alongside the rest of the pack, Tristan pulls out his phone and calls the station. Maybe they can tip him off on the survivor's last known whereabouts.
Tristan is carrying his cell phone, badge, and gun. And attempting to use his Sworn Officer merit in conjunction with Status (Emergency Services) 2 to gain useful information about the girl