I hate my brothers girlfriend so much ☹️

She's super rude and she keeps posting me shit on her instagram about me. They met at a strip club and I told my brother how gross she is and how she's whoring around and only using you cause she likes his car and he won't believe me. They keep lying to everyone and won't tell the truth about what she does. They tell everyone that she's cleaning places at night which is a load of bullshit. And so yesterday we got into a huge argument and he wants me to apologize and I'm like no not until you tell the truth and admit shit and he still wouldn't answer any of my questions so now she's posting mean shit on her instagram about me cause I was curious if she was saying anything about me and of course she is. She's super fake and thinks she's the hottest person ever ugh. I really hope karma bites them in the ass