D. G. Compton’s 1974 The Continuous Katherine Mortenhoe (also published as The Unsleeping Eye) is a near-future SF novel.
Katherine Mortenhoe is a forty-four-year-old woman whose computer skills have won her a minor niche in publishing. She’s settled for a humdrum marriage that is only marginally superior to solitude. She has led an unremarkable life.
She learns that she has just four weeks to live. In the world of this novel, premature death is extremely rare, She has become a valuable media commodity.