Board Thread:Supergirl discussions/@comment-27700324-20181015023445/@comment-27700324-20181015225607

A. Even the comics version of Dark Supergirl isn't a disembodied wraith. The smoke we saw in the finale was just her creation.

B. We don't have any of the knowledge so it isn't possible even if the point i just mentioned in A was wrong.

C. She is classified under Kryptonian.