Nancy Krulik 
Dawn’s Early Light [EPUB ebook] 

Twenty-four hours. That’s all the time Sarah has to tell Tim everything. With the usual end-of-school festivities, then all the packing and preparation, it’s been so hard to put her feelings into words. She needs to tell him how proud she is of his dedication and courage. How much she’ll miss him. How she wants him to go off and be the soldier of his dreams, but come home soon so they can begin the future of hers. Then disaster strikes, and Sarah is not sure she can tell Tim any of it. With only twenty-four hours left before he ships off, she’s not even sure she can say good-bye.