The films she directed ("When Harry met Sally," "Sleepless in Seattle") tugged at the heart's strings but without that extra helping of gooey sentimentality so often noticeable at the fore nowadays. She was also an essayist and a playwright. The N.Y.-L.A.-N.Y. transplant lived in Manhattan and had suffered recently from pneumonia, made unmanageable by an early form of leukemia. In the sixties Ephron worked as a journalist