My parents are selling my childhood home to someone who bullied me nonstop in high school

To make a long story short, I was dating my bully’s cousin. She did not like me and convinced him to break up with me because I was weird. After the breakup, she tortured me for months on social media telling people I was fat, ugly, weird, a serial killer, and told people to stay away from me and even told me to my face I would be better underground, and as a result my mental health severely deteriorated. I became a social outcast and school and had no close friends, I had to start taking antidepressants because my mental health was so poor, and they even made fun of me for that. Flash forward a few years later, I am now a freshman and college, and my parents are wanting to sell their house, which was my childhood home. My parents also own the house that used to belong to my grandparents and have been cleaning it up to completely move into that house, but since they own two houses with a middle-lower class income, paying for two houses hasn’t been the easiest and they are just looking to sell the bigger house. My father told me that someone was interested in the house, and when he told me the name of the person who wanted to buy it, my heart shattered. I have begged and pleaded with my parents to not sell the house to her, however since my dad’s job isn’t doing the greatest right now, they really need the money to pay for improvements at the smaller house. I have offered to put the house on websites to help them sell it quicker, however they are sold on selling it to her because she is offering more than $400,000 for the house. A part of me wants to put the anger aside and let them sell the house to her, but the idea of letting her live in the home where I was born, raised, and cried in because of her fills me with rage. My parents blatantly stated that the $400,000 dollars overturns anything that she has ever done to me, and they will not be changing their mind, but I just cannot fathom how they could possibly sell their house to someone who psychologically damaged me as much as she did. I do realize $400,000 dollars is a lot of money, however the things I went through in high school can never be forgiven with that amount of money. Today I still struggle with talking to people and being myself around people out of fear this will happen to me again in college.