Hit her head on the concrete? After being slammed to the ground, most likely. He wanted to grab Simon by the throat and squeeze until the hyoid bone snapped, and he would choke to death on his own saliva. This is exactly why Pierce had Nate send that demon baby across the country - because he was nothing but trouble, and it was apparent now. He had tried to listen to Olivia's point of view as she defended her brother, calling him sweet and fragile, oh, he was so harmless! That was all a steaming pile of horseshit.
But Pierce just nodded, running his hands over his face. Revenge would come in due time. Hasn't woken up yet registered with him, and he took a deep breath, face going slightly pale. "I'm going back to see her," he decided and then turned to walk off.
If anyone tried to stop him, it would not end well for that unfortunate soul. This hospital did not want to be the main focus of the 'negligent healthcare' centerfold in the paper, or the subject of a scathing report on the 6:00 news, so Pierce didn't have to push and shove his way back to Olivia. He walked there like he owned this hospital.
It was a new sense of deja vu as he pulled the chair up beside her bed. First it was Billy (who still wasn't completely healed) and now his niece was in a coma. When would this nightmare end?
"Olivia, my majestic unicorn," he said, leaning over to tenderly brush his lips across her forehead. "You have to wake up."
Of course she didn't respond, but he scooted close to take her hand, not planning to let go anytime soon.