An Outlaw and a Preacher
Quite a premise for a book. A female outlaw who is on her way to the gallows is rescued by a Boston preacher on his way to Texas. They find a baby along the way and try to convince her brothers to give up their outlaw ways.
It's cute because Sarah is convinced by Justin that they won't hang a lady, so she tries to change her speech and appearance. As high noon approaches, you wonder if they'll find another miracle.