The mother of SIR Bob Geldof's former wife Paula Yates has told how he broke the news of her troubled offspring's death in 2000. Helene Thornton lost her TV presenter daughter, 41, to an accidental heroin overdose - after having watched Yates spiral into a drug-fuelled hell following the suicide of her rock star lover Michael Hutchence. She recalls, "I gripped the phone and was wondering what had made Bob's voice crack. "I heard a choked back sob and then, 'She's dead, Helene.' "I don't remember the next seconds. A giant block of ice seemed to have formed in my head and I stood there, trying to move and not succeeding. "I kept looking at the wall and thinking, 'Paula is dead...Paula is dead."