I made my dad's affair partner/wife so miserable that she left him

My mom was diagnosed with leukemia when I was a child and she was sick for five years. Not long after the diagnosis my dad started having an affair with another woman. When he found out mom was terminal he started telling some of his friends and family and he told them his plan was to marry his affair partner once mom was gone. Someone told me after my mom died. I was a preteen at the time and I hated that woman. At the time I was angry at my dad but not nearly enough. He did marry her and it pissed me off so bad at her. I made her life a living hell for over two years until she left him. I told everyone that she was the other woman and slept with a sick woman's husband. I humiliated her in front of people she worked with, neighbors and people she stopped to speak to. She tried very hard to spend time with me and bond with me and I used those times to make her life awful. I think I insulted nearly every meal she cooked, I compared her in an unfavorable way to my mom and I asked her questions that were designed to make her very unhappy. Like how did it feel sleeping with another woman's husband or how did it feel to be a gross person with no morals. Eventually she ended their marriage because she couldn't interact with a single person if I was there without them being told exactly what she did. And I believe she said I caused her to miscarry with all of the stress. By the time I finished high school I hated my dad for what he did and stopped talking to him completely.