I'm the author of the ASHFALL three-and-a-half-ology: ASHFALL, ASHEN WINTER, SUNRISE, and DARLA'S STORY.
Another cover reveal! This is also by the incredibly talented Ana Correal. Darla's Story is a novelette (60 pages) that will be available for all ebook platforms for $0.99 soon. (November, worst case, but probably much sooner.) It's about everything that happens to Darla between the time the Yellowstone supervolcano erupts and when she meets Alex.