If she hadn't been able to smell that something was off, not been able to feel it, those eyes would have been a good tip. As it is, they definitely sell the impression that something about this guy is strange.

Strange and... she still doesn't feel threatened, not beyond the background creepiness that he emits. What he says makes her shy away a bit, out of immediate reach. She absolutely has no interest in him trying to find her "owner", thank you very much. But the last remark makes her even more curious.

Maybe if she stares at him imploringly he will explain things a bit further, as much as she's probably breaking character even more with that. But she looks just like any other fox. Nobody should be able to track her down. And considering the fox shape she will just hope that it will not occur to anybody to wonder if she was a vampire. After all they only take wolf shapes, right... Not that she thinks that he has much contact with literally anyone else, from what she has observed this evening. Not with how awkward and ...unconnected he seemed. Sure, it could all just be pretence, but she somehow doesn't think so.

Perhaps it is the creepy feeling that he gives off that makes her so relatively trusting. If he actually wanted her ill, he would probably try to hide that better, wouldn't he?