Fall in Love with Your Poison Again

She has a great hobby! That's poison! He also has a good hobby, killing people! On the surface, she is jovial and a complete novice, but on the inside, she is incredibly smart! However, no matter how smart she was, she still fell into the trap set for her from the first day of her rebirth. There were many doubts, many crises, and many brushes with death, but she laughed them off. Who cultivated this mentality? What is his purpose? How can she escape from the bloody altar, where death is certain?