This Arya theories list is riddled with SPOILERS!
How is the Arya Stark future shaping up? Well, it looks like she’s changed her mind about being No One and is definitely back to declaring herself Arya Stark while pressing Needle into Jaqen H’ghar’s chest. Does a girl have no plot? Or was Arya’s time at the House of Black White well spent? It certainly seems so. She can fight blind, survive an assassination, upped her killing skills, and knows her poisons. The Starks could use a stone-cold killer about now.
Let’s look at one of the prominent Arya theories that has been floated out there. Even though it appears that Arya did in fact kill another person called the Waif, some theorists are still hanging onto the notion that Arya had to either kill a part of herelf or die to herself to fulfill her fate in Braavos. Maybe part of that dying involved stabbing herself? Okay. Lady Crane didn’t attend to fake wounds.
Did a piece of Arya actually die? As part of the process of becoming No One and then Someone, it’s plausible. She’s learned how to outwit the Waif and even Jaqen himself. Chances are, Jaqen was hoping Arya would make the choice she did. Her certainly gives us a hint with that little smile after Arya declares herself as Arya Stark and that’s she’s going home.An Arya Stark future puts a former disciple of the Many-Faced God directly in the midst of other characters and their goals. Arya Stark of Winterfell is probably going to derail a lot of plots and schemes before the tale is told.
A very popular fan theory could be true if you're into the idea of Arya stabbing herself as part of the Faceless Men training program.The idea of the battle with the Waif is that this whole exercise has been a war within herself, Tyler Durden-style. Just as she’s about to kill the Waif, she realizes that she, Arya, is the Waif. Ladies and gentlemen, we have just lost cabin pressure.
It doesn’t make sense to have Jaqen H’ghar put himself in Arya’s path so many times and not have her end up with a connection to the Faceless Men. She came all this way to learn her poisons, stick fight, and disobey orders? Not likely. She’s a huge player in future events, and the Faceless Men have been waiting for her.
Also, can we talk about the glee on the Waif/Old Lady's face when she Red Weddinged Arya?
Several times. Also, the faces in the hall look like a progression between Arya’s face and the old woman’s. What does that mean?
Arya knew what was coming. She made herself a target by tossing money around and walking around in plain view. After the "attack," she’s bleeding openly in the street, making a literal trail for the Waif/herself/Jaqen to follow.