Mercy and Eagleflight by Michael Phillips

When young evangelist Miss Mercy Randolph discovers the preacher she is traveling and ministering with is a fraud, she leaves only to become stranded in Sweetriver, Kansas. She is befriended by drifting cowboy Jeremiah Eagleflight. They come to work at the same ranch, where they each find true faith and realize God's love. And when a revenge-seeking cowboy kidnaps Mercy, Eagleflight risks his life to save his love.