Sinners and Saints — Karolyn Cairns

Elisha Mayhew despairs of her future after her father arranges marriage to a man she despises within their faith. Having little choice, she leaves the Pennsylvania Mormon compound for the wilds of Wyoming Territory, praying that a better life waits for her out west.
From the moment Elisha meets the coarse handsome drifter hired to lead the wagon train, she is tormented by her sinful attraction to him. Her ill-fated infatuation with the disreputable guide only deepens during the journey, heading towards certain heartache and pain.
Kieran Monahan believes his bad luck could get no worse the minute he sets eyes on the violet-eyed beauty. Fresh out of a Union army prison, the disgraced former officer had three goals in mind when he was released. Find a job, find a bottle, and find a woman. He agrees to lead the church group west in order to give him and his men a fresh start, never imagining where it would ultimately lead them all.
Torn apart by treachery and tragedy, only faith and newfound love can help them both survive. From the rigid and austere religious sects of Eastern Pennsylvania, to the vast wide open plains of The Old West, desire and duty clash in an uncertain path towards an all-consuming love.