answer: #Person2# couldn't help worrying about the children. #Person1# comforts #Person1#.
documents: #Person1#: Why are you walking to and fro in the room?
  #Person2#: I'm worrying about the children. After all this is the first time they have been out without us.
  #Person1#: Don't worry. They are grown-ups.
  #Person2#: I know. But I couldn't help.