Her husband having predeceased her in July 1745, she died on 19 August 1758 at Slains Castle, County Aberdeen. As she was childless, the family dignities went to her great-nephew, James, Lord Boyd, the grandson of her sister, Lady Margaret Hay and son of William Boyd, 4th Earl of Kilmarnock, who was executed on Tower Hill and attainted in 1746, for his part in the Jacobite rising of 1745.