My mom is moving my abuser back to her home and expects me to visit

So I (30F) was molested by my older brother for 9 and a half years from when I was 3 till I was 12 and finally came forward about it to my mom when I was 25. While shocked, she told me she believed me and at first I thought she was going to cut my brother off.

She maintained a relationship with him under the guise of “he’s my son I can’t abandon him!”

He’s abusive, uses people, and horrifyingly enough he now has kids of his own. I did my part and notified CFS when his daughter was born about the abuse I suffered from growing up but they said they couldn’t do anything about it unless it was reported to police. (I’m being threatened not to report anything to anybody by my mom)

I told her I want nothing to do with him and I’ve had multiple specialists tell me I need to cut him off entirely (my therapist and a hospital psychologist told me). I did, blocked him everywhere. My mom has invited him to gatherings without my knowledge and I’ve had to leave because of him. IM NOT COMFORTABLE AROUND HIM.

Now she’s moved him into her house because he’s a loser who can’t keep a job, has two kids and can’t get his shit together. I told my mom I want nothing to do with him and don’t want to be around him and she goes “but what about Christmas?!” NO. “What about if we invite you over you’re always welcome here!” NO.

I’d rather not have to cut my mom off because I’m disabled and she helps me. But I don’t see what else I can do. She doesn’t care about my boundaries and btw, her own brother did the same thing to her and traumatized her for life yet she KEEPS BRINGING MY ABUSER AROUND ME.

What do guys think? I’m lost. Everyone is making me feel like I’m the crazy one for having boundaries