Now comes a collection of her poetry, almost none of which was published during her lifetime. She feared her poetry was mediocre. It isn’t. In its style and subject matter, it’s very much in keeping with the most crucial of her novels, which include “Under the Net” (1954) and “The Sea, The Sea” (1978). A primary theme is obsessive love. Her rhetoric is emotionally charged and shorn, like the blunt chop of the uneven bangs she wore, of clever words and shallow feelings.