A Train Bound For Nowhere

Synopsis

From Book 1:

Mary Catherine was abandoned on the steps of an orphanage as an infant. Still unadopted, she is nearing the maximum age for the orphanage. Neither of the two choices offered by the mother superior hold much promise. Will it be the orphan train or the streets of New York City?

Trace Jennings lost his father in the Civil War. He was raised by his mother and lives on a ranch in Helena, Montana. A disastrous mail order marriage left him with a stepdaughter and leery of marriage.
Can Mary Catherine and Trace put their bad memories behind them and have a life together? What happens to the stepdaughter?