The Stranger theory *Spoiler*

So everyone who's beat the game knows about The Stranger. A strange female Exo who follows you on your journey. It's not much of a theory, but I think she's working for the Traveler. She obviously doesn't just go invisible and it doesn't seem like she's being sent back to any type of ship... But at the end, she vanished towards the Traveler. It's also quite obvious that she doesnt work for The Awoken. Not a big theory, very subtle, and it could be symbolism for something else... But that's my 2 cents on the matter. Needless to say, there are two expansions and 2 more games. I expect her to become a major character.