A hero for Miss Hatherleigh / Carolyn Miller.

Enhanced descriptions from Syndetics:

Can a proper noble lady find a future with a fossil-hunting man of faith?

As the daughter of Viscount Aynsley, Caroline Hatherleigh knows every rule of society--and she's always followed them precisely. But when she visits south Devonshire and encounters a fossil-hunting scientist and his sister, her assumptions about what is right are shaken. Questions she has never considered about the importance of friendship and faith suddenly confront her--and her comfortable understanding about how the world works is thrown off balance. What if God wants to be the center of her life, rather than merely a social obligation?

Gideon Kirby loves science, and hunting down proof of past lives is a joy he won't willingly give up. But his scientific leanings are being challenged both by his personal beliefs and by local smugglers in the Devonshire countryside. And every day his sister's illness becomes more desperate, her care growing more demanding. Adding a viscount's daughter to the mix is a complication Gideon never expected--especially since he must stay far away from this young woman he's falling for in order to protect his beloved sister's secret.

When a mysterious stranger visits the village, that secret will be exposed, no matter how Gideon fights. Then tragedy strikes in a smugglers' cave. And the threat of scandal may lead to broken hearts and passionless propriety. Will the shaky bond these two have nurtured be strong enough to overcome their differences--or will the trust they've withheld from each other tear three lives apart?