Heather and Snow depicts the low highlands of the Grampian Mountains west of Aberdeen at its most vivid, set in the same region as Salted with Fire (The Minister’s Restoration in the Bethany House series) and tells a humble story of the enduring quality of love–between a man and his friend, between parents and children, between brother and sister, between man and woman, and between a simple-minded boy and his God.
source : http://fatheroftheinklings.com/macdonald/published-introductions-to-george-macdonalds-books/16-the-peasant-girls-dream/