Sara heard someone mentioned losing a mom, and instinctively, she turned her head to see where her own son was. That was when she saw Aaron with someone else. She looked around, noticing there was no one else in the close vacinity, so he had to be the one that had said that, and it was directed at Aaron. She was a little confused, but not frightened. It seemed like the man was just trying to help him find her. Not threatening at all.
Sara walked over the few steps to the two of them, and knelt down so that she was eye level with Aaron, and the other man, since he too was leaning down. She put her hand on her son's shoulder. "I'm right here, baby." Aaron turned around and wrapped his arms around her neck, sheepishly peeking out through her hair at the guy that he'd accidentally tried to hold hands with. "What happened? Did I scare you?" She smiled at Aaron, then turned her head to look at the man her son had been talking to as she picked him up. She was directing the question to her son, but also at Wyatt.