Nora Roberts wrote a book called 'Angels Fall'. It doesn't specifically mention PTSD, but it's a book a lot of people here could relate to. She did a really wonderful job with it, IMO.

Also, there's a series of books by J.D. Robb called the '...in death' series. It starts out with 'Naked in death' and goes from there. There's 20+ books in the series. The books don't have PTSD as the main theme of the stories, but each book has the character learning more about her past and traumas.

Lisa