On a Train Bound for Nowhere — Susan Leigh Carlton

Abandoned on the steps of a New York City Convent, when she was two months old, she was raised in the orphanage. Unadopted and nearing the maximum age for the Foundling Home, Mary Catherine is given a choice by the mother superior, and decides to take the orphan train looking for a future. Trace Jennings is a shy young man who lost his father in the Civil War. Raised by his mother, he lives on a ranch in Helena, Montana. Raw from a disastrous mail order marriage, romance is not on his agenda. Faced with the obstacles life has dealt them, can Mary Catherine and Trace find romance and have a life together?