Patti Davis, the daughter of former President Ronald Reagan's daughter, self-published a non-autobiographical lesbian romance novel in the Kindle bookstore on March 18.

The book is titled Till Human Voices Wake Us and it follows the lesbian relationship between a woman and her stepsister, according to New York Post. The description of the book on Amazon reads, "In the empty days after her son's death, left alone in her grief by her husband, Isabelle Berendon falls in love with the unlikeliest person in the world: her sister-in-law."

Davis, 60, who was born Patricia Reagan, told the publication that the novel won't be a risqué erotica.

"I didn't want to write Fifty Shades of whatever," she told the publication. "It's a love story. This is not me. None of it is autobiographical."

Davis posed for Playboy when she was 41 and in 2011, at the age of 58, she posed nude for More magazine.

She said of the Playboy photos: "If they had insisted on some bedroomy, frilly layout, I would have walked away. I wanted what I'd envisioned all those years earlier, and I wasn't willing to compromise. I knew, given my reputation as the rebellious First Daughter (although my father was out of office by then), that I'd get criticized for doing Playboy, but I didn't care."

He new book costs $2.99 for the Kindle.