I go out there, but see nothing. She says "look up" and there is Cardiac at the top of the bed.

She's climbed each of the slats like a ladder and is now happy as a clam. My middle girl asked if she was scared, but no -

Clearly, she's in one of those moods cats get in. It's happening to her a lot lately. Since Mitzi died, she's been going through a second kittenhood. Both of the lady cats have been acting very differently since Mitz died, for that matter. In any case, not only wasn't she scared, she was happy and ready to play and it took forever and a step ladder to get her back down.
I swear this next pic is unaltered - it's just plain weird.

I will tell you this video is unaltered, but you won't believe me. We call her the Terminator, now.