Fans of historical romance author Johanna Lindsey took to social media to mourn the novelist’s death from complications from lung cancer, which her family announced last weekend.

Lindsey, 67, died on Oct. 27, The New York Times reports, but her family just revealed her death recently, saying they were “too devastated” to do so earlier.

Lindsey (Home for the Holidays, Love Me Forever) was one of America’s most successful romance writers. The author of more than 50 novels, many in the Regency genre, she sold more than 60 million copies of her books in her 40-year career.

On Twitter, Lindsey’s fans posted remembrances of the author, some using the hashtag #MyFirstJohanna to reminisce about the first Lindsey novel they read.

Michael Schaub is an Austin, Texas–based journalist and regular contributor to NPR.