I believe that they are not worried about losing my mother as his father. So should speak the truth with their children in order to ensure the protection and cover between father charged.
I believe that they are not worried about losing his father, same mother. So parents should speak the truth to protect children, to care for each other between the father was taken away.
I believe they also worried about his father lose you, too. So you should tell the truth to the children to protect each other between the father has been kidnapped.