Being sexually harassed by family and coming to terms with it? How Can I Heal?

I'm 23 now. Between ages 18-20 my mum's boyfriend (he has been in the picture and had a tumultuous relationship with my mum since I was 15) used to sexually harass me. The moment I turned 18 things got weird. He would drink heavily and try to get me alone. He's an aggressive person. My mother knows all about what happened to me and expects me to bury it and move on. Between ages 18-20 he would try and ask me to do inappropriate things for him, strip for him, really disgusting stuff. When I was 20 he was caught spying on me from a window when I showered and my mum caught him and left him for a few months and got back with him and told me to get over it. 💔 I've tried moving out on my own but for a few reasons and the last couple years I had to move home again. I do work full-time hours atm, and I study part-time and I have been in therapy the last 12 months with a good psychologist. Unfortunately, my mum is still with this guy and I feel sickened and unsafe and my mum is a big enabler and extremely mentally unwell herself and still at a stage where she refuses to actively get help. Him being back here has just given me memories and emotions I don't like, I'm working through all of this with my psych but I feel so alone. My own mum repeatedly tells me what I went through 'Wasn't even that bad' and her and I have had past arguments about it and she defends him and says I was 18 so it doesn't matter. But that isn't the point. It was a really shit thing I experienced. I just want to vent and I want to talk to others. I want to heal and get away from my mum and her crappy SO safely and go minimal contact with my own mother, keep working and my studies and heal. But then my own mind gaslights me in to believing what my mum says and it is almost like I'm blacking out what happened to me and yet my stomach is sick seeing my own immediate family side with him.
Being sexually harassed by family and coming to terms with it? How Can I Heal?
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