How about getting your mom a special edition of the Les Misérables novel by Victor Hugo? It could either be a collector's edition or a version with illustrations. You could also consider getting her the movie adaptation of Les Misérables or the soundtrack if she doesn't have one yet. Additionally, you could look into booking tickets for a live performance of the musical in your area. For a more sentimental gift, you could make a scrapbook or photo album filled with memories of her favorite productions or performances.
Or you can get her a star map with an important date you share.
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.