Well, its not really a power. They first started to talk about it in 0.16 I think and then in 0.18 they finally started to go into deeper detail on what she can do. It's about her tail being hyper sensitive.
I was just following the joke, I know it's one of her many "cat skills" (Witchers of the Cat School would be jealous). I thought she only had the night vision and "super hearing", so now I'm curious. Back into the game I go!
