Both Loki and and Frigga have similar powers in creating illusions, so when Loki was locked up in the dungeon in Thor: The Dark World, was it Frigga creating an illusion of herself to speak with Loki? or was Loki creating an illusion of her?
was it Frigga creating an illusion of herself to speak with Loki
When Loki was in dungeon, nobody was allowed to visit him. That's why she created an illusion to talk with him.
Later in the movie Frigga creates the same sort of holographic image
of Jane Foster.