I panicked and threw open the door only to find her sitting with her back towards me, perfectly still.
Either rigor mortis had set in...or that pesky squirrel up in the tree next door was playing games with her heart.
After twenty more minutes of complete and motionless focus...
...she gave up the fight and came back inside.
Be warned, squirrel. She knows you're out there. She won't soon forget your taunting.