Create a short story using the following prompt: A young woman discovers a mysterious key hidden inside an old book at a thrift store

Create a short story using the following prompt:

A young woman discovers a mysterious key hidden inside an old book at a thrift store. Intrigued by its unique design and ancient appearance, she decides to take it home and investigate its origins. As she delves deeper into the history of the key, she uncovers a long-lost family secret that has been hidden for generations, leading her on a journey of self-discovery and unexpected revelations.