Question: What award was given for a dark fantasy children's novella with a fictional character "Other Mother"?

Context articles: List of places in The Chronicles of Narnia
Beldam
Fleabag Trilogy
Oksa Pollock
Othermother
Coraline
World Fantasy Award—Long Fiction
Tony Richards (author)
Nebula Award for Best Novella
Joanna Dark

This is a list of fictional places in the Narnia universe that appear in the popular series of fantasy children's books by C. S. Lewis collectively known as "The Chronicles of Narnia."
Beldam, an archaic word meaning "hag" or "witch", may also refer to an old woman, particularly a shrewd, ugly one.
 The word has entered popular usage due to the character of the Beldam, the main antagonist of Neil Gaiman's dark fantasy novella "Coraline" and its subsequent film adaption.
The Fleabag Trilogy is a series of three fantasy children's novels by British author Beth Webb.
 Set in a fantasy world, the series chronicles the trials and tribulations of Gemma and her friend and companion, the titular character Fleabag, a talking black cat.
The Oksa Pollock is a series of six fantasy children's novels by Anne Plichota and Cendrine Wolf.
 Plichota and Wolf initially tried to publish the series through Éditions Gallimard in 2007, but were rejected.
 The authors then self-published the series until 2010, when the books were picked up by XO Editions.
 Of the central character of Oksa Pollock, the authors have stated that they named her after a Ukrainian aunt of Plichota's named Oksana.
"For the fictional character "Other Mother", see Coraline"
Coraline is a dark fantasy children's novella by British author Neil Gaiman, published in 2002 by Bloomsbury and Harper Collins.
 It was awarded the 2003 Hugo Award for Best Novella, the 2003 Nebula Award for Best Novella, and the 2002 Bram Stoker Award for Best Work for Young Readers.
 It has been compared to Lewis Carroll's "Alice's Adventures in Wonderland" and was adapted into a 2009 stop-motion film directed by Henry Selick.
The World Fantasy Awards are given each year by the World Fantasy Convention for the best fantasy fiction published in English during the previous calendar year.
 The awards have been described by book critics such as "The Guardian" as a "prestigious fantasy prize", and one of the three most prestigious speculative fiction awards, along with the Hugo and Nebula Awards (which cover both fantasy and science fiction).
 The World Fantasy Award—Long Fiction is given each year for fantasy stories published in English.
 A work of fiction is eligible for the category if it is between 10,000 and 40,000 words in length; awards are also given out for longer pieces in the Novel category and shorter lengths in the Short Fiction category.
 The Long Fiction category has been awarded annually since 1982, though between 1975—when the World Fantasy Awards were instated—and 1982 the short fiction category covered works of up to 40,000 words.
 In 2016, the name of the category was changed from Best Novella to Long Fiction.
Tony Richards is a dark fantasy or horror author.
 He was born in 1956 in Greenford, England, and educated at University College School, Hampstead, before going on to study law at Middlesex University.
 Although he has written science fiction, mystery, and even mainstream stories, he is principally an author of supernatural, dark fantasy, and horror fiction.
 He has published three full-length novels, five novellas, and more than sixty short stories.
 His work has seen print in most major genre outlets, and he is a frequent contributor to Cemetery Dance Magazine and to anthologies compiled by the British editor Stephen Jones.
 An avid traveller, his fiction is often set in locations he has visited, most notably in his 2004 stand-alone novella Postcards from Terri, where the peripatetic heroine of the title goes to Hong Kong, Japan, Africa, Switzerland, Nicaragua, Istanbul, Budapest, Barcelona, Ottawa, Chicago, New York, Vancouver, and San Francisco during the course of the story.
 It is this quality that prompted the editor, publisher, and critic John Pelan to say of him: "He’s convincing … convincing enough that the locals will read about their city as described by Tony Richards and shudder.
 And that’s what we call a writers’ writer."
 He has twice been nominated, first in 1988 for the Bram Stoker Award for Best First Novel for "The Harvest Bride", and then in 2008 for the British Fantasy Award for Best Collection for "Going Back".
 He is married to Louise Richards, and lives in London.
 His latest novel, "Dark Rain", is set in the fictional town of Raine’s Landing, Massachusetts, and is intended to be the first of a series of books located there.
 The second such novel, "Night of Demons", is scheduled for publication in 2009.
The Nebula Award for Best Novella is given each year by the Science Fiction and Fantasy Writers of America (SFWA) for science fiction or fantasy novellas.
 A work of fiction is defined by the organization as a novella if it is between 17,500 and 40,000 words; awards are also given out for pieces of longer lengths in the novel category, and for shorter lengths in the short story and novelette categories.
 To be eligible for Nebula Award consideration a novella must be published in English in the United States.
 Works published in English elsewhere in the world are also eligible provided they are released on either a website or in an electronic edition.
 The Nebula Award for Best Novella has been awarded annually since 1966.
 Novellas published by themselves are eligible for the novel award instead if the author requests them to be considered as such.
 The award has been described as one of "the most important of the American science fiction awards" and "the science-fiction and fantasy equivalent" of the Emmy Awards.
Joanna Dark is a fictional character and main protagonist of the "Perfect Dark" fictional universe, created by Rare.
 She made her debut in the Nintendo 64 first-person shooter "Perfect Dark" and is a player character in all the games of the series.
 Outside of video games, Joanna also appears as the lead character in all the "Perfect Dark" novels and comic books.
 Joanna is an operative for the fictional Carrington Institute, where she was given the code name "Perfect Dark" in honor of her flawless performance in training tests.