|Ruby Red by Kerstin Gier|
Everyone thinks that Charlotte is the one in the family to inherit the time travel gene. Her birth date was predicted by Sir Isaac Newton, after all, and he knew a thing or two about equations. As a result, she has spent her entire life training for time travel; she is fluent in several languages, is a history-wiz, and knows how to ride horses and fence. And she is the only one in the family who can tell her grandmother to mind her own business. But Charlotte does not inherit the gene. Her cousin, Gwyneth does.