In the game I just ran, one of the players realized he left a 5 year old girl behind to die. There should be a roll of some kind for this, but it feels bizarre to roll empathy to resist social stress. It's really the opposite - the higher your empathy, the more likely you are to get stressed out over leaving the girl behind.
-Jeff
P.S. She had been possessed by a zombie master, they had tied her up but didn't want to kill her. Then one died, the other ran, and realized the girl was still tied up.