Question: The author of the book De zaak Natalee Holloway was convicted of killing what woman?

full_context: Document 1: Patrick Holland (criminal): Patrick Eugene "Dutchy" Holland (died 6 June 2009), was an Irish career criminal, best known for being the first person accused of killing Irish investigative journalist Veronica Guerin, which he denied until his death in prison in England.
Document 2: Loving Natalee: Loving Natalee: A Mother's Testament of Hope and Faith is an autobiography written by Beth Holloway about her missing daughter Natalee Holloway, with portions contributed by Sunny Tillman. It was first published in October 2007 by HarperOne, an imprint of HarperCollins, and has also been marketed under its alternate subtitle "The True Story of the Aruba Kidnapping and Its Aftermath".
Document 3: Robin van Helsum: Robin van Helsum (born 22 April 1992 in Hengelo) is a Dutch citizen who went missing on 2 September 2011 and appeared in the Berlin city hall Rotes Rathaus three days later, claiming his mother had died in an automobile crash when he was 12 and that he had lived with his father for five years in the forests of Germany, where he buried his father after the latter died in August 2011. Dubbed "Forest Boy" by the media, van Helsum later admitted that the disappearance was a hoax and was sentenced to 160 hours of community service. Van Helsum was believed to have vanished before he was discovered working in Berlin.
Document 4: The Golden Egg: The Golden Egg (Dutch: Het Gouden Ei), published as The Vanishing in English-speaking countries, is a psychological thriller novella written by Dutch author Tim Krabbé, first published in 1984. The plot centers on a man whose obsession over the fate of his missing lover from years ago drives him to confront her abductor and pay the ultimate sacrifice in order to know the truth. The book was adapted into a 1988 film which was later remade in an English-language version by the same director.
Document 5: Luka Magnotta: Luka Rocco Magnotta (born Eric Clinton Kirk Newman; July 24, 1982) is a Canadian murderer, convicted of killing and dismembering Lin Jun, a Chinese international student, before mailing Jun's hands and feet to elementary schools and federal political party offices. This act gained international notoriety. After a video depicting the murder was posted online in May 2012, Magnotta fled Canada, becoming the subject of an Interpol Red Notice and prompting an international manhunt. He was apprehended at an Internet café in Berlin while reading news about himself in June 2012. After eight days of deliberations, a jury convicted him of first-degree murder on December 23, 2014. He was previously sought by animal rights groups for allegedly uploading videos of himself killing kittens.
Document 6: Natalee Holloway (film): Natalee Holloway is a 2009 American television film directed by Mikael Salomon based on Beth Holloway's book about the 2005 disappearance of her daughter Natalee Holloway. The film stars Amy Gumenick as Natalee Holloway, Tracy Pollan as Beth Holloway-Twitty and Jacques Strydom as Joran van der Sloot. When it aired on the Lifetime Movie Network on April 19, 2009, the film scored the highest television ratings at that time in the network's history.
Document 7: Levi Bellfield: Yusuf Rahim (born Levi Rabetts; 17 May 1968), formerly known as Levi Bellfield, is an English serial killer. He was convicted on 25 February 2008 of the murders of Marsha McDonnell and Amelie Delagrange and the attempted murder of Kate Sheedy, and sentenced to life imprisonment.
Document 8: Joran van der Sloot: Joran Andreas Petrus van der Sloot (] ; born 6 August 1987) is a Dutch convicted murderer who killed Stephany Flores Ramírez in Lima, Peru in 2010. He is also the prime suspect in the 2005 disappearance of Natalee Holloway in Aruba.
Document 9: Rachid Belkacem: Rachid Belkacem (1973 - July 5, 2006) was a Dutch national, and a suspected member of the terrorist organisation Hofstad Network. He was never convicted in court. His nickname was Abu Fadel, he was a friend of Mohammed Bouyeri, the murderer of Dutch filmmaker Theo van Gogh.
Document 10: Patrick van der Eem: Patrick Paul van der Eem (born 1973; Curaçao) is a Dutch Antillean entrepreneur and convicted drug dealer known for his part in the undercover television report about Joran van der Sloot that was produced by Dutch crime reporter Peter R. de Vries. The program set a Dutch television viewing record and renewed attention in the ongoing investigation of the 2005 disappearance of American student Natalee Holloway in Aruba.
Document 11: Grim Sleeper: Grim Sleeper is the nickname for convicted serial killer Lonnie David Franklin Jr., responsible for at least ten murders and one attempted murder in Los Angeles, California. The attacker was dubbed the "Grim Sleeper" because he appeared to have taken a 14-year break from his crimes, from 1988 to 2002. In July 2010, Franklin was arrested as a suspect, and, after many delays, his trial began in February 2016. On May 5, 2016, the jury convicted him of killing nine women and one teenage girl. On June 6, 2016, the jury recommended the death sentence, and on August 10, 2016, Los Angeles Superior Court sentenced him to death for each of the ten victims named in the verdict.
Document 12: Aruba: The Tragic Untold Story of Natalee Holloway and Corruption in Paradise: Aruba: The Tragic Untold Story of Natalee Holloway and Corruption in Paradise
Document 13: Joe Van Holsbeeck: Joe Van Holsbeeck was a Belgian 17-year-old who was murdered on 12 April 2006 at Brussels Central train station. This murder, following the attempted theft of an MP3 player, took place at approximately 4:30 in the afternoon, during rush hour. Although petty theft is not uncommon, and even violent robberies are not unheard of in Belgium, Van Holsbeeck's murder in a crowded train station during the daytime shocked many Belgians at the time. The two perpetrators, who were later arrested, turned out to be Romani juveniles.
Document 14: Rabia Chaudry: Rabia Chaudry is an attorney and the author of "Adnan’s Story: The Search for Truth and Justice After Serial" (St. Martin Press, September 2016), a book about the criminal case of her friend Adnan Syed, who was also featured in the podcast "Serial". Chaudry was the first person to take the Syed's case to "Serial" producer and host Sarah Koenig. Molly Fitzgerald writes in "Bustle" that the book "picks up where ‘Serial’ left off," describing evidence not included in the "Serial" podcast including letters he wrote to his family early in his imprisonment. "Adnan's Story" became a "New York Times" best-seller and one of Audible's 10 most popular audio books of 2016. Chaudry also has a podcast, "Undisclosed" with Susan Simpson and Colin Miller, that looks at evidence in Syed's case and others.
Document 15: De zaak Natalee Holloway: De zaak Natalee Holloway: mijn eigen verhaal over haar verdwijning op Aruba (English: "The Case of Natalee Holloway: My own story about her disappearance in Aruba") is an autobiographical non-fiction book written by Joran van der Sloot with Zvezdana Vukojevic. It was released in 2007 in the Dutch language by Amsterdam-based publisher Sijthoff. An English version was not published.
ground_truth: Stephany Flores Ramírez