During a scene in Game of Thrones S07E02, Stormborn, Arya Stark runs into an old friend in the Riverlands...

While she is trying to keep warm, alone in the forest, she is surrounded by a pack of wolves, and Nymeria, her long-abandoned direwolf, presents herself as the leader and they exchange greetings.

Near the end of that scene, Arya says, "That's not you."

Does this mean she hallucinated the entire interaction? Otherwise, what does she mean by "That's not you"?

During a scene in "Stormborn" (Game of Thrones, S07E02), Arya Stark runs into an old friend in the Riverlands...

While she is trying to keep warm, alone in the forest, she is surrounded by a pack of wolves, and Nymeria, her long-abandoned direwolf, presents herself as the leader and they exchange greetings.

Near the end of that scene, Arya says, "That's not you."

Does this mean she hallucinated the entire interaction? Otherwise, what does she mean by "That's not you"?

During a scene in Game of Thrones S07E02, Arya Stark runs into an old friend in the Riverlands...

While she is trying to keep warm, alone in the forest, she is surrounded by a pack of wolves, and Nymeria, her long-abandoned direwolf, presents herself as the leader and they exchange greetings.

Near the end of that scene, Arya says, "That's not you"

Does this mean she hallucinated the entire interaction? Otherwise, what does she mean by "That's not you"?

During a scene in Game of Thrones S07E02, Stormborn, Arya Stark runs into an old friend in the Riverlands...

While she is trying to keep warm, alone in the forest, she is surrounded by a pack of wolves, and Nymeria, her long-abandoned direwolf, presents herself as the leader and they exchange greetings.

Near the end of that scene, Arya says, "That's not you."

Does this mean she hallucinated the entire interaction? Otherwise, what does she mean by "That's not you"?