The Same Backward as Forward Book by Jennifer Lynn Barnes

The story is a tragic enemies-to-lovers narrative that provides the backstory of Hannah and Tobias Hawthorne II. Hannah Rooney, a nursing student from a criminal family, is focused on keeping a low profile and getting her sister, Kaylie, away from their dangerous life. Tobias Hawthorne II is the entitled heir to a vast fortune, but secretly guards his own dark secrets.