Please help me out

So, about 3 months ago my moms friend started making moves on me. I’m 16 and he was 30. They both work together, and she trusts him a lot. So over the course of time that I’ve known him, my mom would leave him alone with me and when we were alone he would touch my thigh, try to get me to sit on his lap, try to sext with me, etc.

In the beginning, he used to take me driving, because my mom doesn’t like taking me, and he would hug me, and that was it. I didn’t think anything of it because I’ve never had a father figure in my life before. Or even a guy, my family is all girls. So I thought everything was okay, but when he started touching me, or getting boners after hugging me I realized that this wasn’t normal, and I finally realized this because when my mom left me home alone with him, he tried to get me to sit on his lap and when I felt uncomfortable and tried to leave he screamed at me and said he was going to tell my mom that I was trying to leave at 6 at night when it wasn’t safe.

Eventually I gained the courage to tell her what was going on and I thought that she understood and it felt great, although he wasn’t allowed over anymore my mom and him still hang out, still talk, he comes over to fix my moms car sometimes for free but my mom makes sure I’m not home. And my sister does the same, she’s 30 as well. But they’re still very close and still tell eachother “I love you” and it hurts. I feel like my feelings are invalid and I’ve talked with them both before and they just got angry with me, but they eventually said that they understood and would cut off ties with him.

Come to find out that they haven’t, and I just now found out that my mom has been texting my sisters. Saying “it’s not like she was raped by him, if that was the case it would be a different story” and saying that I’m overreacting, and it’s “teenage hormones” and I’m being dramatic. And it hurts really bad. Am I? I do have trauma from being sexually assaulted. And I feel like if I hadn’t of told my mom when I did I could have been raped. I don’t know what to do.