Joanna was overcome by an overpowering urge just to get away from this crazy place. Her life was turned upside down, and more than anything, she just wanted to get out of this lunatic store.
Meanwhile, the other Joanna sharing the same body was experiencing an identical emotion. Their body quickly stood and ran out the door, both Joannas momentarily not worrying about which of them was doing the running, in their hurry to get away.
That lasted until they got to the sidewalk, and the Joanna on the right and the Joanna on the left each tried to bolt in their respective directions. They almost tumbled again, but regained their balance and turned to glare at each other.
"This is all your fault!" they shouted in unison.