Mother heard her five-year-old son, Jack, 1 and found that her six-year-old daughter 2 his hair. “ Never mind, ” she tried to comfort 3 , “ your sister doesn ’ t understand that it hurts you 4 she is pulling your hair. ” Mother got out 5 the room. It was only for a minute that she 66 a cry again. She hurried 7 the room and found the sister was crying this time. “ What ’ s the matter? ” she 8 the boy. “ It ’ s nothing, ” he replied 9 , 10 she understands.