Question: What is birth name of the author of the novel "Diamond Girl"?

full_context: Document 1: Kelly Gay: Kelly Gay is an American author, known for her work in the science fiction/fantasy genre, particularly urban fantasy. Gay has written books in both the adult and young adult genres, penning the latter under the name of Kelly Keaton. She is particularly known for the Charlie Madigan series, a story about a police officer who attempts to balance paranormal cases, across three different worlds, with life as a single mother. Her works have received critical acclaim and award recognition, and have been translated into several different languages.
Document 2: Diana Palmer (author): Susan Kyle, née Susan Eloise Spaeth (born December 11, 1946, in Cuthbert, Georgia, United States) is an award winning American writer who was well known as Diana Palmer and has published romantic novels since 1979. She has also written romances as Diana Blayne, Katy Currie, and under her married name Susan Kyle and a science fiction novel as Susan S. Kyle.
Document 3: Blood Diamond: Blood Diamond is a 2006 German-American political war thriller film co-produced and directed by Edward Zwick, starring Leonardo DiCaprio, Jennifer Connelly and Djimon Hounsou. The title refers to blood diamonds, which are diamonds mined in war zones and sold to finance conflicts, and thereby profit warlords and diamond companies across the world.
Document 4: Girl Candy Films: Girl Candy Films (called Candy Girl Films in original promotions) is an American pornographic film studio based in Charlotte, North Carolina that specializes in lesbian-themed films. The company was founded by pornographic actress and film director Nica Noelle (in conjunction with AEBN.net) in 2011, after Noelle left her previous lesbian-themed film company, Sweetheart Video.
Document 5: Nancy Warren (author): Nancy Warren is a Pacific Northwest author of contemporary romance novels. She received her first publication contract after winning Harlequin's 2000 Summer Blaze contest. Since then, she has released 30 novels and novellas, been twice nominated for the Romance Writers of America's RITA Award, and won a "Romantic Times" Reviewers' Choice Award.
Document 6: Daniel Jewel: Daniel Jewel is a London-based film producer and director. A graduate of Bristol University and Oxford University he has worked with British film directors such as Stephen Poliakoff, Charles Sturridge and Brian Gilbert. In 2006 he produced the play Allegiance at the Edinburgh Festival, which starred Michael Fassbender as the Irish leader, Michael Collins. The play was directed by Brian Gilbert. In 2007 he produced and directed two films for Channel 4 about the shisha smoking cafes of London's Arabic quarter. In 2008 he directed two documentaries for Al Gore's Current TV. In late 2008 his production company, Third Man Films produced Sidney Turtlebaum starring Derek Jacobi and Rupert Evans which The Times called a "Masterpiece" and was nominated for a British Independent Film Award and short-listed for an Academy Award in 2010.
Document 7: Diana Ossana: Diana Lynn Ossana is an American writer who has collaborated on writing screenplays, teleplays, and novels with author Larry McMurtry since they first worked together in 1992, on the semi-fictionalized biography "Pretty Boy Floyd". She won a Best Adapted Screenplay Oscar or Academy Award, a Writers' Guild of America Award, a BAFTA Award and a Golden Globe Award for her screenplay of Ang Lee's "Brokeback Mountain", along with McMurthy and adapted from the short story of the same name by Annie Proulx. She is a published author in her own right of several short stories and essays.
Document 8: The Diamond Brothers: The Diamond Brothers is a series of humorous children's detective books by Anthony Horowitz, the first of which was published in 1986. The books tell the adventures of the world's worst private detective, Tim Diamond, and his younger brother, Nick Diamond, who is considerably more intelligent. These books are aimed at young teenagers, slightly younger than those aimed at with the more recent "Alex Rider" series. However, both series star a teenage boy and include guns, fights and worldwide criminals. The most notable difference is that "The Diamond Brothers" series contains much more humour, with many puns, pop culture references and absurd situations. Although the books started in the late 1980s and have continued into the millennium, Nick and Tim remain roughly the same age (14 and 28 respectively), while London changes with the times (the newer books feature Oyster Cards and computers for example, whereas the older books feature parts of London that have long since changed, such as smoking in offices).
Document 9: Susan Allison: Susan Allison is an editor-in-chief and vice president at the Ace Books and Berkley Books imprints, which are part of the Penguin Group (USA) publishing company. In 1984 she published William Gibson’s first novel, Neuromancer, and Guy Gavriel Kay’s first novel, The Summer Tree. Both of these authors are still edited by her, now for Penguin Random House. Her authors also include bestselling author Laurell K. Hamilton and southern eminence Lee Smith. She became editor-in-chief in 1982, and was made a vice-president in 1985. She was a guest of honor of the 1990 World Fantasy Convention.
Document 10: Tiffany Case: Tiffany Case is a fictional character in the 1956 James Bond novel "Diamonds Are Forever" and its 1971 film adaptation. A "Bond girl", she was portrayed by Jill St. John in the film. In the novel, the story of her name is that when she was born, her father Case was so embittered she was not a boy that he gave her mother a thousand dollars and a powder case from Tiffany’s and walked out. In the film it is stated that she was named after her accidental preterm birthplace, Tiffany & Co., where her parents were going through a choice of wedding bands, to which Bond dryly jokes that she was lucky that it had not happened at Van Cleef & Arpels.
Document 11: Danielle Steel's 'Palomino': Danielle Steel's Palomino is a 1991 television movie based on a novel by Danielle Steel about the romance between a photographer and a cowboy. A subplot involves a romance between characters played by Rod Taylor and Eva Marie Saint, who acted together years earlier in "Raintree County" (1957) and "36 Hours" (1964). The film aired on October 21, 1991 on NBC.
Document 12: Donna Ball: Donna Ball (born 1951 in North Georgia, US) is an American writer of over 90 novels, mainly romance novels since 1982, she also signed her novels as Rebecca Flanders, Donna Carlisle and Donna Boyd. She also signed novels with Shannon Harper as Leigh Bristol and Taylor Brady.
Document 13: Diamond Girl (film): Diamond Girl is a 1998 Canadian-South African romance drama television film directed by Timothy Bond and starring Jonathan Cake, Joely Collins, and Kevin Otto. Written by Charles Lazer and based on the novel "Diamond Girl" by Diana Palmer, the film is about a young paralegal who is secretly in love with her boss, a carefree lawyer who manages his family's Napa Valley vineyard. While he negotiates the sale of the vineyard, his high-powered attorney brother arrives from London and takes control of negotiations. As the deal progresses, the paralegal's affections are torn between the two brothers.
Document 14: Eileen Dreyer: Eileen Dreyer is a New York Times bestselling American author of contemporary romance, historical romance and suspense and also publishes under the pen name Kathleen Korbel. She is a five-time winner of the Romance Writers of America RITA Award and in 1995 was inducted into the Romance Writers of America Hall of Fame. In 2014, she competed on the TV game show Jeopardy!.
Document 15: Lisa Kleypas: Lisa Kleypas (born 1964) is a best-selling American author of historical and contemporary romance novels. In 1985, she was named Miss Massachusetts 1985 and competed in the Miss America 1986 pageant in Atlantic City.
ground_truth: Susan Eloise Spaeth