Why? Because that's something you'd expect from someone like me? I'm not the one who turned on the hostilities when we first met, you know.

[She actually wanted to be nice to him, and maybe learn what it was like to have real siblings for once. But he was the one who made it very clear that wasn't what he wanted.]

[Not that she can blame him, really. If he had been the one coming into her home when she was younger, she may have acted the same way. But still.]

Look, like it or not? We're related. And we're gonna be living in the same house from now on. I'm not just gonna snitch my own brother.