I (23M) started therapy today, hooray!

Only problem is, my family is too goddamn spicy. Once I got into my brother's (25M) increasingly homicidal fantasies and animal killings, she stopped me before I mentioned the threats he made to kill people and told me that she is a mandated reporter and has an obligation to report certain situations to the authorities.

I think adding police to the equation will make everything worse and immediately paint a target on my back because I am the only one who would ever disclose the violence that happens under this roof. It might result in me being homeless if I have to flee for my life. I live in Ohio and it's the middle of winter, so not a great start.

I wanted to work with a therapist because I grew up in this place and it traumatized me so badly that I'm scared of leaving this dump (not to mention, I have disabilities now that make that difficult). How much will I have to tiptoe around here? Is merely being afraid that someone will use violence against me reportable? What about if they fantasize about murder and domestic terrorism? What about violent crimes that they committed in the past? Or specific threats in the present?

Is therapy just not the right fit for this kind of thing? Did I end up with a heavy duty "fuck you" problem and therapy is just for "I feel sad sometimes" problems? It feels like bullshit to have to self-censor so much just because things were harder for me. How is throwing cops at the problem supposed to help when there is no universal basic sustenance or housing for the victims to escape to?

What are your experiences with mandated reporting, and how do you avoid triggering it?