I'm the author of the ASHFALL three-and-a-half-ology: ASHFALL, ASHEN WINTER, SUNRISE, and DARLA'S STORY.
Darla's Story is available on Kindle a month earlier than promised! (Thanks, Emlyn Chand.) It has also been sent to Nook, Kobo, and the iStore and will show up on those soon. Only $0.99 to spend another 60ish pages with Darla. Enjoy!