Actually, Christopher didn't care about Daphne's life or death at all. After all, she was an old woman, tough and stringy enough that she would be hard to chew.
However, within the Walt Family and the Evil Spirit Knights, there were many relatives on Daphne's side of the family.
If he had a falling out with Daphne, and she got angry and took all her family members away with her, it would severely weaken the strength of the Walt Family and the Evil Spirit Knights!
Chapter 287