From A Wiki of Ice and Fire
|Book(s)||A Feast for Crows (Mentioned)|
A Feast for Crows
Arya was sent to the kitchens to help prepare food as part of her chores in the House of Black and White. There she would help Umma, who would talk to Arya, but Arya could not understand her. She was the only one who gave Arya her name.