All Among the Barley von Melissa Harrison

The fields were eternal, our life the only way of things, and I would do whatever was required of me to protect it. The autumn of 1933 is the most beautiful Edie Mather can remember, though the Great War still casts a shadow over the cornfields of her beloved home, Wych Farm. When charismatic, outspoken Constance FitzAllen arrives from London to write about fading rural traditions, she takes an interest in fourteen-year-old Edie, showing her a kindness she has never known before.