How about getting her a collection of episodes from the show on DVD, or a subscription to a streaming service that has the series available? You could also consider getting her a book related to the show, such as the "Black Mirror: Reflections on the Black Mirror Phenomenon" anthology or "Inside Black Mirror" book that explores the show's themes and production. Another idea is to get her some merchandise from the show such as a t-shirt, poster or other cool Black Mirror-themed accessory.
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.