That blank stare is not an elaborate ruse. She's just dim.
I mean just look at her tiny, irritating face. She always looks flabbergasted. She loves sitting on suitcases. She once scurried up the stairs at the sound of a sneeze. She runs headlong into windows. She's also scratching at my door right now.
She's so dumb! Doesn't she know it can't rain indoors?
Zibah is the least subtle cat in the greater Oxfordshire area. She sits slyly on my lap whenever I have a delectable meal. "What? I've always enjoyed sitting by you and purring. What's that? Oh, I do suppose that's a steak; why I hadn't noticed! My word are you sure you can finish all that?" She knocks forks and notebooks off the counter with impunity then acts like she had nothing to with that suspicious clanging coming form the kitchen. Her favorite place to sit is next to the sink. The sink.
Are you done with that?
In summation, next time buy a dog. Because dogs are amazing and they never hiss at you. And they don't poop indoors.