Lorna didn't beat the shit out of him. That thought didn't even cross her mind. She had already done enough damage. What she was trying to do was help him up, and if that didn't work she'd go and get someone before running and hiding in her closet.
"I'm so sorry! I really didn't mean to do that," she tried explaining, "It happens... sometimes. Are you okay? Can you get up? I can go get help..."