I found her sus even before ch 19. After all, what kind of childhood friend will let their friend self-destruct and not do anything. The fact that the og empress was criticised for her behaviour and she didn't try to stop her at the risk of breaking their friendship. Now ch 19 confirmed my suspicions because in no way her expression was a guilty one. And even if i'm wrong, i don't want her close to our fl. Better a powerful enemy than a useless ally. Anastasia's life was in danger because of her.