The Daring Heart — Caroline Courtney

Lord Childs, her best friend's guardian, was a cold, brooding aristocrat who disapproved of Lucilla's boldness. And he told her so.

She visited fortune-tellers, appeared uninvited in his stables, and invaded his library. But all his admonitions had a hollow ring when Lucilla found him, too, consulting with the forbidden gypsies--and when Lucilla's reckless curiosity awoke in him a strange desire.