The Wolf Mirror — Caroline Healy

Changing places doesn't always help you see things differently. Cassie Miller, a 21st century teenager and Lady Cassandra, a young heiress from 1714 mysteriously switch lives. Until they can solve the conundrum surrounding the Miller family, they are stuck in the wrong century. Cassie must navigate a society of etiquette, exclusion and intrigue while Cassandra has to learn to tough it out as an unchaperoned female in the year 2014.