HBO "Game of Thrones" star Maisie Williams reflects on growing up on the set of HBO's hit series in a new profile with The Australian . Williams was 12 years old when she was cast as the young Arya Stark. Her mother debated taking her out of read-throughs for episodes that contained sex. But this only piqued her interest, according to The Australia. "The sex was just quite embarrassing and awkward for us," Williams said. Now Williams watches the episodes with her mother and grandmother (who is "plied" with lots of gin).