In His Hands by Adriana Anders

Abby has belonged to the Church of Apocalyptic Faith for so long she can barely remember her life before, except for living in a car with her mom and going hungry. However, her small community of faith is not as idyllic as it appears. Abby wants out, but leaving the Church isn't easy. If caught fleeing, she could be killed... or worse.

Luc, the grape grower next door, just wants to be left alone with his vines. He keeps to himself and in return has no problems with his strange neighbors. But when Abby lands on his doorstep, something in her eyes won't let him turn her away. And just like that, he's in the middle of a war with the Church during the worst snowstorm he's ever seen, all while falling for a woman he's just met.

This is the third book in the Blank Canvas series. Each story is a standalone, but there are some spoilers if you read them out of order. Adriana Anders's books are all in paperback only, but she isn't your average mass-market paperback writer. While her novels are definitely romances, they also touch on very deep, serious subject matters. In His Hands takes you inside an apocalyptic cult, bringing light to all its blessings and evils. Anders's writing style is engrossing, but it does use a vast vocabulary-- I had to look up a few words in the dictionary! I highly recommend this entire series, and I can't wait to read her other works!