Δαφνη Ευτυχια Αρθουρος

And even if she is smart enough to know that I need the keys when I go away and leave her alone.

I wouldn't be so sure. One of my cats has "keys" associated with "outside", which, to her also equals "bad place". So every time I pick them up, she bolts away from the door. And Perrine has already demonstrated she's a lot smarter than the average cat. :)