Question

Frank lifted Audrey's head off the concrete. She was still in a daze. The hockey puck had sailed out into the audience and popped her in the forehead. "What happened?" she asked. "The last thing and then I'm on the how did I get here?"

How should Audrey's response be punctuated to show that she is stunned?
"What happened?" she asked. "The last . . . thing. And then I'm on the. How did I get here?"
"What happened?" she asked. "The last thing. And then I'm on the how did I get here?"
"What happened?" she asked. "The last thing and then. I'm on the how. Did I get here?"
"What happene