She wakes up with a pain in her gut, not knowing what it means. The pain persists throughout the day, only worsening as she does her chores – cooking with Umma, sweeping the floors, learning potions and poisons with the Waif. Only in the evening, when she is about to finish polishing the statue of the Mother does the pain finally overtake her, and she drops her oil-soaked rag, falling to the ground with a whimper.
So used to the dying and suicidal people of Braavos, the acolytes don't realise that it's her – one of their own, one of the House of Black and White – until thick blood is running towards the drains, darker and more foreboding than the red rivulets from others. Someone carries her away to her bedroom, laying her on her bed and pushing up her shift to see what is causing her to bleed. When the cause is determined, merely seconds after the act, the acolytes leave her be, alone and in pain in her dark bedroom, until the Waif comes with milk of the poppy.
Arya sleeps, one day, two days, then a third day, before she wakes to the smell of flowers and blood, her head lying in the lap of a familiar man, who kisses her forehead. His whispers to her in Valyrian, and Arya can understand what he is saying, even though he thinks she does not – like the Targaryen's, Stark's learnt High Valyrian as children, though their mother tongue is not it, or indeed Common. The Stark's learn three languages, the first of which that is kept closely guarded, because they have the Blood of the Children, and they Speak with Forests.
The girl cries in his lap, and not even the Kindly One will call the man away, for Jaqen H'ghar would not leave even if he asked. The Many-Faced God has taken their child before it can even be born. They leave in the night, and the girl's eighteenth name-day passes a week later, and the two take a boat across the Narrow Sea. They leave the House of Black and White behind them, though the man teaches the woman all he knows.
Seventeen years later, the man and the woman are married with six children, Winterfell their home and the name Stark replaced with H'ghar – but the Direwolf still flying high.