Rebekah
If you wander into its teritory it probably kills you. That's why humanity tend to avoid wild animals. Of course bears work on instinct alone, vampires are blessed with the same intellect as humanity and if they claim to remain humane then should not lash out.
What would be the point in threatening the unkillable? No one can harm any of you, must be nice to know whatever your brother does he's essentially untouchable.