In later years, she was a frequent speaker on behalf of people with mental illness and an accomplished figurative painter.
The actress Sissy Spacek attempted to buy the film rights to A Mind of My Own, but 20th Century Fox, the studio that produced The Three Faces of Eve, stood in the way, claiming it owned the rights to her life story in perpetuity. Mrs. Sizemore had earned $7,000 from the earlier movie; a settlement was reached with Fox, and the second movie was never made.
The sunny narrative of Mrs. Sizemore’s triumphant second act was called into some question in 2012, when Colin A. Ross, a psychiatrist specializing in dissociation, published a book, The Rape of Eve, in which he accused Dr. Thigpen of having exercised an unethical, Svengali-like influence over Mrs. Sizemore and manipulating her for nefarious purposes during and after his treatment of her ended. Dr. Thigpen died in 1999.