I agree. She either thinks Sam has multiple personality disorder or that she has become possessed by an alien entity (glowing red eyes were a dead giveaway) but I don't think she has quite made the final connection to Reign. If she does know Sam is Reign, I hope she tells Team Supergirl. I get annoyed when characters keep secrets from their friends just to create more drama. Also, is it just me or is Supergirl losing a lot of fights this season?