After Sirius had left home, it wasn’t easy. Walburga and Orion were a lot harsher on you and regulus, a mixture of their anger, hurt and maybe even guilt. It was all a blur, but it made life at home a lot harder.
Once you and regulus had returned to hogwarts things were different, Sirius was more detached. He ignored you in the hallways, pretended he didn’t hear regulus call his name. Why was he being like this? It wasn’t your faults that your parents were like that, and yet it was as if he didn’t want to speak to either of you ever again.
And honestly? That was it.
You and Regulus obviously knew of Peter’s little betrayal, so you had the coward cornered confronting him. Even if Sirius didn’t believe or want to speak to either of you, he was still your brother, you cared for him. But James, Remus and Sirius came down the hallway after hearing word from marlene