Lots of fiction about Jeanne d'Arc - see the 14th-15th century page (the 100 Years War section) at
www.HistoricalNovels.info. I haven't read most of it, so can't vouch for the quality. But Mark Twain's novel follows the historical record pretty closely.
I wrote an article about Jeanne for
Black Night, the fanzine of the
Blackmore's Night Renaissance rock band. Back copies are not readily available, but I will make a note to post the article in the "Articles" section of my website. Some of the best of the nonfiction sources I used were:
Kelly DeVries,
Joan of Arc: A Military Leader (1999)
Joan of Arc: In Her Own Words, compiled and translated by Willard Trask (1996)
Donald Spoto,
Joan: The Mysterious Life of the Heretic Who Became a Saint (2007)
Régine Pernoud and Marie Véronique Clin,
Joan of Arc: Her Story (1998)
Siobhan Nash-Marshall,
Joan of Arc: A Spiritual Biography (1999)
Régine Pernoud,
The Retrial of Joan of Arc (1955)
All are excellent.