So there was a reason Bran gave Arya the Valyrian Steel dagger back in Season 7. He knew all this time she was gonna kill the Night King with it.

Arya Stark has the blood of Kings and is the sister of a king. This means she’s a princess, the princess that was promised Shall bring the dawn, that princess is Arya.

She is the prophesised hero, Melisandre told her she’d shut Blue Eyes forever, wights and The Night King had blue eyes. Beric Dondarrion was brought back so many times because his final calling was protecting the princess, he had to stay alive until she was ready to perform her duty.

Let’s also not forget her name.

Arya- taken from the name Aria; a slow song.

Arya = Song

White Walkers = Ice

Dragons = Fire

A Song Of Ice And Fire.

George RR Martin also said “Pay attention to the Direwolf names, they’re important to the Starks.”

Nymeria is the name of Arya’s Direwolf. Nymeria was a Warrior Queen of the Rhoynar, who led her people to safety during a devastating war. Which is exactly what Arya did.