Read the teen novel "Timeless" by Alexandra Monir
This book is about a young lady named Michele. She has to travel across the country to live with the grandparents she has never know after her mother passes. While living with her grandparents she discovers the journal of an ancestor. This journal allows Michele to travel back in time. When she visits 1910 and falls in love with a young man. Unfortunately certain circumstances make them realize that they cannot be together and they must exist in their own eras.