In her last life, she killed him with her own hands, but failed to become an immortal.
In this life, he still died because of her, and she still failed to become an immortal.
So she didn't want to become an immortal anymore, so she sent him to become an immortal.
In her last life, she had waited for him for five hundred years.
This time, it was him who would wait for her for thousands, thousands of years.
[This is just a 10,000-word short story. I'm sorry because the stupid author doesn't know how to publish short stories.]
Intention: