Board Thread:Legitimate Canon Questions/@comment-65.93.139.213-20150630121457/@comment-4091815-20150702163806

Actually - Peter and Derek were part of the Hale Family Pack when each of the "power-takings" occurred.

Peter was comatose from right after the fire till he killed Laura and they'd been in the same pack prior to the fire.

Derek had decided to help Peter, even going so far as trying to recruit Scott in that shower scene in Season 1.

They were all still in the Hale Pack.