...but all the choirs in Harrenhal sing "no" as the hutsman, er Jaqen H'ghar is nowhere to be found. See, a man has patrol duty - A man can go kill himself! - its Arya's response. Thus, began one of the best power plays since Tywin Lannister took her for cupbearer, for a man must kill whoever she names. Poor Arya wanted to name Tywin to protect Robb, but Tywin has already gone away, so a girl names a man and a man couldn't look more upset - A girl must be joking, a girl must unname a name! - but Arya won't do so, not unless Jaqen helps Gendry & Hot Pie escape.
If a man helps her out, a girl must do as he says. The girl is happy to obey. Even if Gendry looks not so happy himself. It's one thing for Arya to need Jaqen and another, entirely different, to risk her own life for him, so the blacksmith boy can't help himself but to yell her name for half of Harrenhal to hear it ...if it weren't because Jaqen has already killed the guards, by the time Arya walks Gendry and Hot Pie through the main gate.