"Guess what," Arya asked Fleur all excited dancing around Fleur in the living room while Fleur rested on the couch. Veronica wasn't home yet and Arya took the chance to spill the secret. Infact she has been waiting to let Fleur know about it for long but hesitated wondering if she would end up telling her mother about it.
Arya has strictly brought up by Veronica, never letting the girl out of sight for more than few hours while she was at school. Veronica for no specific reason has been taking care of her daughter in the eyes of others. A sensible mother worried all the time about her daughter and what ever she does, that's how the neighbours names her. But she lacked nothing else while bringing her up alone after the death of her husband.