Today was the first day I was home and awake when the building/destruction began, so I discovered where she went.
There's a teensy bit of room between our fireplace (which we've never used.. in fact, my desk blocks it) and our entertainment center. I stood here taking the picture, watching her breathing deeply and staring with fear towards the front window.
When a particularly loud noise occurred, she showed me her true hiding tactic:
.. sticking her head behind the entertainment center with the general belief of all cats: if the head is hidden, you can't see them at all!