In June 2013, Gascoine publicly revealed that she had Alzheimer's disease, at a Beverly Hills gala which was set up to raise money to fight the disease. In August 2016, her husband
Alfred Molina reported that she was "in a very advanced stage of Alzheimer's", and had been in a specialist care home for over two years. She died on April 23, 2020 in Los Angeles, two weeks after her 83rd birthday.