[1] The book was published by Les Éditions des Intouchables on January 17, 2007, when Côté was 12 years old.

[4][5][6] The author initially stated that she secretly wrote the book between mid-October 2005 and mid-June 2006 and corresponded with a friend.

[3] On March 13, 2007 the French-language newspaper La Presse published an article noting a list of similarities between Laura l'immortelle and the film Highlander;[5] La Presse editor Nathaëlle Morissette discovered that the novel had similarities to the film,[7] with one editor saying that the similarities were "a little troubling.

"[4] A Frenchman named Frédéric Jeorge received a copy of the book, and he found that almost all of the book was a copy of "Des cendres et du vent," a Highlander fan fiction written by Jeorge that was available on the Internet around late 2001.

[8] After being confronted, Côté admitted that she plagiarized the fan fiction, and presented it as an original work.