K just finished A Thousand Pieces of You, a book centered on time travel and parallel dimensions. The narrator is a young woman with super smart parents who finds herself traveling in time with her Firebird, a necklace that transports you to a different time.

She visits futuristic London, she drops into Imperial Russia, she boards a scientific submarine, all the while trying to find out who killed her father and dealing with the romantic interests of the research assistants of her parents, who are traveling with her.

Recommended for Middle to High School readers of fantasy.