Sisters of Mercy Flats (#1) :
(Book)

The McDougal sisters can swindle a man faster than it takes to lasso a calf. When the wagon carrying them to jail falls under attack, each sister is picked up by a different man. Unfortunately for Abigail, she's grabbed by a twit of a shoe salesman, Mr. Hershall Digman. She steals his horse and rides off to the nearest town, not giving him another thought-- until she discovers those secret papers in his saddlebags. Could Mr. Digman be a Confederate spy? When they meet again, they're determined not to trust each other-- or the God who won't seem to let them go.