A simple winter : a seasons of Lancaster novel / Rosalind Lauer.

Enhanced descriptions from Syndetics:

THE PROMISE OF A HOME,
THE HEARTBREAK OF AN IMPOSSIBLE LOVE

As a budding journalist with a major newspaper, Remy McCallister is eager to prove herself. While investigating an unsolved crime, Remy winds up in the tightly woven Amish community of Lancaster County, the last place she would ever expect to find herself. The story leads her to Adam King and his ten younger siblings, who are trying to sustain their warm, loving home in the wake of the murder of their parents. Although Remy tries to remain professional, she is captivated by the Kings. With her own mother gone and her father disengaged from their relationship, Remy longs for a home and a family just like that of these good, simple people.

Suddenly patriarch of his large family, Adam struggles to do the right thing for his siblings, his community, and his God. He neither wants nor needs the complications that spirited Remy brings. But as much as he tries to push her away, even as he counts all the ways this lovely outsider cannot possibly remain in his world-or in his heart-the wondrous light she shines upon his troubled soul cannot be denied. Adam can only pray for the strength and the faith to get this Englisher girl out of their lives for good.

Snowbound with the Kings, Remy experiences the wonder and the chores of a simple winter among the Plain People, as well as the friendship of their warm community. When her peaceful interlude ends, does she dare to reveal a killer in their midst, knowing that she may lose the love of this special family and this remarkable man?