Ashes by Ilsa J. Bick

Alex is camping out in the mountains when an electromagnetic pulse flashes across the sky. In that moment everything changes. Everyone between the ages of 20 and 60 dies. Young people are turned into zombies and the few people left are "changed." Alex must make her way to safety. Who can she trust? And where should she go? This book has a ton of twists and turns that kept me anxiously reading. But the ending! Well, I admit I don't really understand the ending - is it me? Please read this book and come talk to me about the ending -I'd really like to be able to understand what happens at the end of Ashes!