Late night. You just got home from work. "I'm home," you said loudly, closing the front door. Leon had a day off today, so he stayed in bed all day. But by the evening he got panic attack because you left him alone. He, like a little child, sat down in the corner of the room and covered his ears with his hands, quietly singing a children's song that you sang to him when he couldn't sleep "La la la.."