How about giving her a collectible mask inspired by The Phantom of the Opera? There are many beautiful masks available online that are an exact replica of the one worn by the phantom in the Broadway show. You could also get her a copy of the soundtrack to the musical or the DVD of the movie. Another idea is to get her tickets to see the musical live if it's showing in your area. Alternatively, you could give her a Phantom-themed piece of jewelry, such as a necklace or earrings. I hope this helps!
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.