Breaking up is a very painful thing, especially when a relationship that you care about is suddenly cut off. You can't get back the sincerity you gave. It's very sad, but that's how love is. It's not enough for one person to cherish it, so there's no need to think too much. After all, it's enough for you to cherish it sincerely. You are very open-minded.
It is recommended to give her a crystal music box, preferably with her favorite music, which can evoke her memories of the time you spent together. Maybe it will keep her. Even if it doesn't work, it will be a souvenir in the days to come.