My brother is sleeping with the girl who beat me up

Mari

I posted last month about how I got in a fight with this girl in the club because I told her “move before I make you move” and the violent hood rat was punching me and dragging me by my hair.

Today I found out my own brother is messing with her because I saw the bitch in his life. I told him what she did and my own brother said that it was a “me problem”.

What should I do? What happens if she brings this ratchet bitch around me and my family?