How about a first edition or rare copy of one of Hemingway's books, such as "The Sun Also Rises" or "A Farewell to Arms"? You could also consider getting her some Hemingway-inspired literature, such as "The Paris Wife" by Paula McLain or "Hemingway's Girl" by Erika Robuck. Another idea could be to plan a trip together to a destination that inspired Hemingway's writing, such as Paris or Key West.
Or you can get her a star map with the date when she was born.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.