Avenging My Abusive Adopted Mother

“I'm the adopted daughter. To repay my adoptive mother, I've never had any contact with my biological parents. Even after they passed away, I didn't claim their inheritance, just to avoid hurting my adoptive mother. Then the high-temperature apocalypse arrived. My family found a folk remedy for Davina to ensure she would have a son. But Davina looked disgusted at the nasty remedy. I casually mentioned that this wasn't the right time to have a child. After hearing that, Davina secretly disposed of the remedy. Less than a week after the disaster struck, there was an artificial rain. My family thought the disaster was coming to an end. They all learned that Davina had discarded the remedy because of my advice. They blamed me for cutting off their offspring. They kicked me out of the house. Before long, I was left to die from the heat. In this new life, I inherited a large fortune, which I used to build a safe house. I want them to watch me enjoy the air conditioning while I feast. And I will watch them meet their demise.”