Não.
Não está no programa, mas nos livros, Arya tem um par de sonhos em que ela enxerga através dos olhos de Nymeria, essencialmente rondando as florestas do que é strongmente implícito serem as Terras Fluviais.
De Uma Tempestade de Espadas II: Sangue e Ouro (Capítulo 65, Arya XII ):
By the time they found themselves in the foothills of the Mountains of the Moon, the rains had mostly stopped. Arya could see the sun and moon and stars, and it seemed to her that they were heading eastwards. "Where are we going?" she asked again.
This time the Hound answered her. "You have an aunt in the Eyrie. Might be she'll want to ransom your scrawny arse, though the gods know why. Once we find the high road, we can follow it all the way to the Bloody Gate.
Como mostrado nesta citação, a essa altura Arya e o Cão de Caça deixaram as Terras Fluviais para trás e estão se movendo em direção ao Vale de Arryn. Naquela época, Arya tem um sonho muito vívido:
That night she went to sleep thinking of her mother, and wondering if she should kill the Hound in his sleep and rescue Lady Catelyn herself. When she closed her eyes she saw her mother's face against the back of her eyelids. She's so close I could almost smell her ...
... and then she could smell her. The scent was faint beneath the other smells, beneath moss and mud and water, and the stench of rotting reeds and rotting men. She padded slowly through the soft ground to the river's edge, lapped up a drink, then lifted her head to sniff. The sky was grey and thick with cloud, the river green and full of floating things. Dead men clogged the shallows, some still moving as the water pushed them, others washed up on the banks. Her brothers and sisters swarmed around them, tearing at the ripe flesh.
Apesar de não ser identificado pelo nome, o rio mencionado está implícito como sendo o Greenfork (o rio dos Gêmeos), lá atrás nas Terras Fluviais.
De Uma Dança com Dragões II: Depois da Festa (Capítulo 45, A Garota Cega ):
She opened her eyes and stared up blind at the black that shrouded her, her dream already fading. So beautiful. She licked her lips, remembering. The bleating of the sheep, the terror in the shepherd's eyes, the sounds the dogs made as she killed them one by one, the snarling of her pack. Game had become scarcer since the snows began to fall, but last night they had feasted. Lamb and dog and mutton and the flesh of man. Some of her little grey cousins were afraid of men, even dead men, but not her. Meat was meat, and men were prey. She was the night wolf.
But only when she dreamed.
Aqui, é ainda mais óbvio. Nymeria ainda está de volta em Westeros (onde o inverno está se instalando) e enquanto a região exata nunca é identificada, ela certamente não está nem perto de Arya que está em Braavos na época.
Há também várias menções de uma matilha gigante de lobos aterrorizando as Terras Fluviais.
De Um banquete para os corvos (Capítulo 44, Jaime VII ):
The next day, Ser Dermot of the Rainwood returned to the castle, empty-handed. When asked what he'd found, he answered, "Wolves. Hundreds of bloody beggars." He'd lost two sentries to them. The wolves had come out of the dark to savage them. "Armed men in mail and boiled leather, and yet the beasts had no fear of them. Before he died, Jate said the pack was led by a she-wolf of monstrous size. A direwolf, to hear him tell it. [...]
"A ring of fires round your camp might keep them off," said Jaime, though he wondered. Could Ser Dermot's wolf be the same beast that had mauled Joffrey near the crossroads?
Desta vez, a área está claramente identificada: Jaime está em Riverrun na época. Arya, entretanto, deixou Westeros e já passou algum tempo em Braavos.
Parece que Nymeria praticamente permaneceu na área onde Arya a deixou em