This is the second anonymously published novel acknowledged by Opie in her correspondence (Peter Garside, James Raven, and Rainer Schöwerling. The English Novel 1770-1829: A Bibliographical Survey of Prose Fiction Published in the British Isles, 2 vols (Oxford: Oxford University Press, 2000); vol. 2: 1800-29: 1824: 73).
Much to Blame, by a Celebrated Author. London: John Templeman, 1824.