My brother has been bringing his new gf over to our home and every time I see her she never bothers to say hi and never even turns to even look at me. Just now, she completely ignored and walked past me. If you’re asking me why I didn’t say hi first, it’s because I never had a chance to. The only times I got to see her is whenever she walks through the living room to get to my brother’s room with her back facing me and just now when I left my room and she walked passed me. I thought I was alone at home and I was shocked to see someone in the house. She doesn’t even bother to say hi to my parents and stays over without anyone knowing (we found out later). She bathes over here all the time. I told my brother she’s rude and he just gave me a sheepish smile. He knows but I don’t think he’s going to say anything since it’s his first gf and they just got together. I hate that she invaded the safe space that is my house and that she is so blatantly rude. I don’t think she’s shy/ anxious by the way, she looks very aloof when she saw me earlier. Where I live, we value manners and family culture a lot, I wonder if this is normal in other countries. I’m also bad at English so I’m sorry if I couldn’t explained it properly but this situation makes me feel so angry and I don’t know if I should be.