There are many choices in a person's life. But there are many people in the world who never have a choice.
Our heroine said: "Destiny is in my hands. I like to control my own destiny, and I prefer to control the destiny of others. So, I give you a choice." Yes, that's it. Even if our heroine is also someone who has been played by fate, even if she has been abandoned by the world she knows, even if the so-called right to choose does not belong to her from the beginning...
She once made a vow: If she loses it, she will find it. If you forget, you will find it again. If it is destroyed, it will be reshaped. Life or death, only you can decide. Stay with it for generations.
Then, it depends on how she identifies this oath and how she makes her own choice...