Board Thread:False Info and Speculative Discussion/@comment-10117306-20140523011652/@comment-4091815-20140527015707

Dry63 wrote: Think what you want but it's not canon. When Cora "fell ill" in Season 3(a), it was done so that Adelaide could miss a couple episodes and go shoot the Reign pilot - that's not canon because it's outside the story - it's "real world" production stuff.

Derek made her all better (after the actor got back from shooting the pilot) and she was back on the show.

THEN (after Reign got picked up to series) Cora moved to wherever she moved to and is doing whatever she is doing within the TW universe.

You're both right.