Dealing with Workplace Bullying: Need Advice

Hi everyone, I work at a middle/high school, I am off for the summer. I worked for elementary school for 3 years, loved it. All the staff , teacher's, aides, principals were great. I loved going to school every day. Then in April 2023, I was told I would be transferred to the middle high school May 2023. During a zoom meeting, my principal and superintendent and coworkers were told of my transfer. The women I was going to work with, verbalized she did not need or want help, or anyone to work with her. It worried me, but I have never worked at a job I did not get along with my coworkers. I am happy and upbeat . The coworker I was replacing retired. The school put out ads for months for the job with no application received. So. I was transfered. May 1st my new coworker was standoffish. Day two she asked about me ,my past, where I worked before, if I had family, married. I thought I had worried for nothing. But, then everything turned upside down. The third day in the morning, I went into her office to ask about her evening, she said she was going to a spin class. She looked at me and said, I am not a morning person. So I went back to my desk. She talked the first two mornings , did not say anything. Then it started, she came to work and said "Morning", she did not want to talk to me. If I asked a question she would snap at me. I tried to make conversations, Told her about a mutual friend, was hosting a French exchange student. She snapped and said "don't you know all the gossip." I would ask about students she would just say read the chart. But, she did not show me where in the computer the notes were. Next day, I asked. For the next 6 weeks, she snapped at me whenever, I spoke. There were 18 times she bullied me in 6 weeks. Talked about me to coworkers, about how she did not want me there. Finally 3 days before school was out for the summer, I went to the principal, superintendent, and my union rep about all the bullying. They were all very supportive. The principal stated they would take care of it that there would be no bullying in his school. They had a meeting with her, I was not invited. She was nice to me the last 2 days of school. She doesn't have to be my friend, but I do not deserve to be bullied . I am on summer break now, I can't stop thinking of how mean she was to me. She never gave me a chance. I love my job, working with the kids. But, I find I am depressed now, I have lost my joy , isolating all summer. My husband works all day. My mother used to bully me as a child, my sister started bullying me when I met my husband. My husband had never been married before , she would tell me how I will never get married, he won't marry you, you will be single forever, she would tell him about all my ex boyfriends, and ex husband. Trying to turn him against me. It hurt so bad, I have never said anything bad to her or about her. I was always nice and kind . But , it got worse when I told her I was engaged. She was not happy, started putting me down any time she could. She was my maid of honor at my wedding , because I was hers. Then she said something so hurtful to my soul. I cried for days. I asked her why she would say that, she said because I always said " my mom", and it is our mom. But, I never said my mom that night, not even once. I gave a complement to my nephews wife. And my sister verbally laid into me in front of her mother in law, her daughter and daughter in law. I was devastated. She never apologized, I have not spoke to her in 2 years. I do not deserve to be bullied. My coworkers bullying me brought out all the old hurts, and new ones. During the last 5 weeks of work, I listened to church services, or inspirational speakers to work, at lunch and on my way home to help me not to cry and feel defeated. I keep telling myself, how can she bully me, or why, she doesn't know me. Friends have said ignore her, not the easy, I am new to her department. I relive the abuse in my head all the time. We bought a new house and I don't have the energy to decorate or unpack. 2 months off no work, unpacked 5 boxes, nothing on the walls. I need ideas, I need help, I no longer have joy, I am no longer that happy, positive person. I feel lost and just want to sleep. I have until Aug 28th, then school starts again. Please help, Why should I quit my job, because she doesn't want me there? Thank you for listening.