It's the music that catches Nepeta's attention first. She doesn't recognize the song, but it tells her that someone else is out in the fog. Someone who's quite entirely ease to track. All she has to do is follow the sound of the music, and that's easy enough to manage.

Unfortunately for Spike, none of his attempts at catching her out in a trap work, if that had been the intention. She's too used to spending long hours hunting all sorts of monsters to be so inattentive as to mess that sort of meddling, especially when the fog has her on high alert as it is. Who knows what else could be lurking out amongst the fog, given some of the other things they've had thrown at them during the Arenas.

It the silence that finally gets her to draw near enough to be seen, and she's a strange sight, appearing out of the fog. Not one that looks like it'd be too much of a threat, but between the grey of her skin and the horns she's not human no matter how humanoid she might look.