There are a few things that stand out for me that are not in your favor, but one giant one that should make you run, not walk, to the nearest exit:

THE BIGGEST RED FLAG is that someone your SO knows put hands on you and your S/O did nothing about it. And then berated you for the other person's abuse. No excuse.

As for the rest of it, more dark yellow/orange/red flags:

- telling you that you are not "family" (putting you down)
- not communicating with you (silence)
- feeling anger/resentment/hostility when you try to speak (anger)
- immaturity (not being on the same level)

IMHO, I think you should end the relationship.

And also, have you spoken with your T about this situation?

I really hope you will take good care of you and look out for yourself. You come first. Invite people into your life that bring you light, not darkness.

Best wishes to you Rose