In the 1940s film Now, Voyager, Bette Davis plays a daughter struggling against her mother's stifling repression. Nearly fifty years later, in the Hollywood saga Postcards from the Edge, Shirley MacLaine, as a neglectful and bossy mother, inflicts untold psychological pain on her daughter, played by Meryl Streep. These dramas of conflict and the ambivalent struggle for separation have been central to popular images of mothers and daughters...