Family dinner

So my Mom created a scene again in front of family and friends. She flipped out hit me called me names. I was silent. Followed by…..deathly silence.
Is it ok to attack someone just because you are having a bad day/bad week?
It was supposed to be special day. Iv been moving away from her this year.
She sabotages events and or anything nice I do for her. She sabotages it and then attacks me for it.
I feel nothing today.
I stayed. Played nice. Then when it was time to go home I couldn’t even look at her anymore.
I didn’t want to say goodbye or anything.
I don’t have friends because im an anxious wreck. Probably because of her constant attacks growing up. Living at hone was like living in a war zone. Never knew when an attack was around the corner and my life would be turned upside down in moment.