Otherwise Engaged (A Time Traveller Mystery‪)‬

Finding a husband is the main occupation of many young ladies in 1803 Bath, and Alexandra Barton is no exception. But her situation is a little different. She is already engaged to someone, and he's waiting for her, more than 200 years in the future.  Allie is determined to find her way back to him, but to do that, she must first negotiate the minefield of Georgian manners – and avoid being arrested for murder. 

'Otherwise Engaged' is the second book in the Time Traveller Trilogy, following 'Spanish Sails'.