So they even kill their own kind, not just humans. I feel like the author is trying to say something there...
Or maybe the JK was bullshitting her about being a fellow Witch and was just being edgy. Either way it seems that MC is a confirmed witch, but I'm wondering why the author hasn't shown her transforming even once. The dream she had might have just been a red herring and now I'm very curious of the direction the story will go from here.