THE CHILDREN by Charity Blackstock. 240 pages. Little, Brown. $4.95.
Lise was a pale, blue-eyed wisp who at 15 sheepherded seven starving, barefooted children out of the ruins of Warsaw's ghetto, across Europe, to safety in a French Jewish orphanage. She was also one among thousands of Jewish children who survived the Nazis only to find themselves displaced and placeless in the wreckage of postwar Europe. They seemed anything but superfluous to British Novelist Charity Blackstock (Mr. Christopoulos, Monkey on a Chain). Working through a British Jewish relief agency, Mrs. Blackstock brought about 500...