Question: Which actress starred in a 2007 American horror film that was an adaptation of Jack Ketchum's 1989 novel of the same name?

Context paragraphs:
Morgue Street: Morgue Street is a 2012 Italian horror short film directed by Alberto Viavattene and based on Edgar Allan Poe's "The Murders in the Rue Morgue".  The film gained notoriety when it was banned in Australia by the Australian Classification Board before it could screen at Sydney's A Night of Horror film festival.  It has been praised by Jack Ketchum, Brian Yuzna, and Uwe Boll.

Offspring (2009 film): Offspring is a horror film about survivors of a feral flesh-eating clan who abduct locals.  It is based on the novel of the same name by Jack Ketchum, which is itself the sequel to "Off Season".  Pollyanna McIntosh reprises her role in the sequel, "The Woman".  Before he began to direct the film, a friend of van den Houten's specifically requested that he keep The Woman alive so she could appear in a sequel.  The cannibals in this film speak a language of grunts which is subtitled for the viewer.  This did not happen in the sequel, as it only contains one of them.

The Lost (2006 film): The Lost is a 2006 American psychological horror film that was written and directed by Chris Sivertson based on the Jack Ketchum novel of the same name.  It was produced by Lucky McKee.  The film stars Marc Senter as charismatic teen sociopath Ray Pye.  Senter won best actor awards from both Screamfest and Fantaspoa film festivals.  He was also nominated for a Fangoria Chainsaw Award.  Supporting cast include Shay Astar, Alex Frost, Michael Bowen, and Robin Sydney.  The movie had its world premiere at the SXSW Film Festival with a limited theatrical release following shortly after.

The Girl Next Door (Ketchum novel): The Girl Next Door is a crime novel written by author Jack Ketchum in 1989.  It is about two teen girls who are left in the care of their aunt, and the systematic and escalating abuse both of them and one sister in particular suffer at the hands of their aunt and her children.  It is loosely based on the true story of the murder of Sylvia Likens in Indianapolis, Indiana in 1965.  In 2007 it was made into a feature film, "The Girl Next Door.

The Woman (2011 film): The Woman is a 2011 American horror film directed by Lucky McKee, adapted by McKee and Jack Ketchum from Ketchum's novel of the same name.  This movie is a sequel to the film "Offspring".  The film stars Pollyanna McIntosh, Angela Bettis, Sean Bridgers, Lauren Ashley Carter, Carlee Baker, Alexa Marcigliano, and introducing Zach Rand and Shyla Molhusen.

Red (2008 film): Red is a 2008 thriller film based on a novel by Jack Ketchum and directed by Trygve Allister Diesen and Lucky McKee.  It concerns one man's revenge after his beloved dog dies in an attempted robbery.  The screenplay was written by Stephen Susco based on the novel.  It premiered at the Sundance Film Festival in 2008.

Blythe Auffarth: Blythe Auffarth (born April 23, 1985, in Pleasant Valley, New York) is an American actress, perhaps best known for starring in "The Girl Next Door".

Off Season (novel): Off Season is a horror novel written by Jack Ketchum and initially published by Ballantine Books in 1980.  It was Ketchum's first novel and was partially based upon the legend of Sawney Bean, which also inspired Wes Craven's 1977 cult classic horror film "The Hills Have Eyes".

The Girl Next Door (2007 film): The Girl Next Door (also known as Jack Ketchum's The Girl Next Door) is a 2007 American horror film adaptation of Jack Ketchum's 1989 novel of the same name.  The film is loosely based on true events surrounding the torture and murder of Sylvia Likens by Gertrude Baniszewski during the summer of 1965.

Jack Ketchum: Dallas Mayr (born November 10, 1946 in Livingston, New Jersey), better known by his pseudonym Jack Ketchum, is an American author.  He is the recipient of four Bram Stoker Awards and three further nominations.  Many of his novels have been adapted to film, including "Red" and "The Woman".  In 2011, Ketchum received the World Horror Convention Grand Master Award for outstanding contribution to the horror genre.

Supporting paragraphs: Blythe Auffarth The Girl Next Door (2007 film)
Answer: Blythe Auffarth