Perhaps separation from the world breeds a perspective on life, eternity, death and a posture towards evil that might actually bring healing to the world.
To those most closely touched by this unspeakable horror:
Ha-makom yenachem et'chem b'toch she'ar avelei Tzion vi'Yerushlayim - May the one who is ever present comfort you together with other mourners of Zion and Jerusalem.