The Last Letter by Rebecca Yarros
Ella, a single mother of twins, begins a long distance penpal relationship with her brother's friend and army buddy, Becket, while he is away fighting for our country. They develop a strong bond with their letters and then tragedy strikes and they are brought together. This was an emotional story, both heart-warming and heart-wrenching at times. Very well done and kept me captivated from page one until the very end.