Ann Rae Rule (née Stackhouse; October 22, 1931 – July 26, 2015) was an American true crime author of "The Stranger Beside Me", about serial killer, and Rule's co-worker, Ted Bundy.
 Rule was also known for her book "Small Sacrifices", about Oregon child murderer Diane Downs.
 Many of Rule's books center on murder cases that occurred in the Pacific Northwest and her adopted home state of Washington.
Elizabeth Diane Frederickson Downs (born August 7, 1955) is an American woman convicted of the May 1983 murder of her daughter, and the attempted murder of her other two children.
 Following the shooting, Downs told police a stranger had attempted to carjack her and had shot the children.
 She was convicted in 1984 and sentenced to life in prison plus 50 years.
Small Sacrifices is a 1989 American made-for-TV movie written by Joyce Eliason and based on the best-selling true crime book by Ann Rule of the same name.
 The film is about Diane Downs and the murder and attempted murder of her three children.
 It stars Farrah Fawcett, Ryan O'Neal, Gordon Clapp, John Shea and Emily Perkins.
 The film premiered on ABC on 12 November 1989.
Dead By Sunset is a 1995 true crime nonfiction book by author Ann Rule.
 It is based on the 1986 Oregon case of the murder of Cheryl Keeton, who was found beaten to death inside her van on the Sunset Highway and the later conviction of her estranged husband, Brad Cunningham.
 The book made "The New York Times Best Seller list" in 1996.
Practice to Deceive is a 2013 book by the American author Ann Rule that details the murder of Russel Douglas, found shot between the eyes in his car on Whidbey Island, north of Seattle, Washington, on Christmas Day 2003.
 The book was released in October 2013 by Simon & Schuster's Gallery Books imprint.
Leslie Rule (born in February 25, 1958 in Seattle, Washington) is an American novelist, paranormal non-fiction author, magazine writer, photographer, and the daughter of the late true crime author Ann Rule.
Randy Roth is a convicted murderer and thief from Washington.
 He was convicted of the 1991 murder of his fourth wife, Cynthia Baumgartner Roth.
 He was suspected but never tried for murdering his second wife, Janis Roth, in 1981.
 In both deaths he was the only witness, he claimed the activity that led to the death was the idea of his deceased wife, and the bodies were cremated as quickly as could be arranged.
 He was also convicted of stealing in the form of defrauding insurers and the Social Security Administration and was sentenced to one year for theft and 50 years for first degree murder in 1992.
 At least two true crime books are based on Roth's crimes, "A Rose for Her Grave" by Ann Rule and "Fatal Charm" by Carlton Smith.
Cheryl Keeton (October 27, 1949 – September 21, 1986) was a Portland, Oregon lawyer who was found dead inside her Toyota van on the Sunset Highway (Oregon) by a passing motorist.
 At the time of her death, she was going through a long bitter divorce and custody battle over her three sons with her husband, Bradly Morris Cunningham.
 A trial that followed her 1986 murder inspired true crime writer, Ann Rule, to write her 1995 best seller, "Dead By Sunset".
 Cheryl Keeton was interred in Bunker Hill Cemetery located in Cowlitz County, Washington (U.S. state).
A Rose for Her Grave and Other True Cases is the first book in author Ann Rule's Crime Files Series.
 Released in 1993 by Pocketbooks, the book details Randy Roth, who murdered two of his wives for insurance money, as well as other cases, including those of Dick Marquette, a convicted Oregon serial killer.
The Stranger Beside Me is a 1980 autobiographical and biographical true crime book written by Ann Rule about the serial killer Ted Bundy, whom she knew personally before and after his arrest for a series of murders.
 Subsequent revisions of the book were published in 1986, 1989, 2000, and 2008.

Question: What is the name of the book written by Ann Rule about the May 1983 murder of Diane Down's daughter?
Answer: Small Sacrifices