There are endless terrifying possibilities here, and Clara isn't fond of any of them. Could she be sick? Is it contagious? What do they have on their hands?

"C'mon, let's sit down." She guides Bobbie as gently as possible to the nearest chair, one hand resting on her shoulder and the other coming back to her arm. Social rules don't apply when someone might be in danger. "Can you put a finger on what's wrong?"