Hmm. Of course, the wild-card Nobel can throw is having another ordinary human figure out the whole cat twintail identity. But who to choose? A love rival for either of the leads? Or one of her friends?
My pet cat bites only my feet and the only one that jumps from the top cabinet down to my stomach during my deep rest. My cat weighs 2kg not including the force of gravity during the fall.
As long as no one panics and does something dumb like transform or blurt something out, all she's doing is idly speculating. I don't think she's going to make the leap of logic that would be "deduce the entire plot from the fact that the cats here are weirdly intelligent"