She might be 17 years old but the 'Game of Thrones' actress Maisie Williams proves that she is unafraid of voicing out her frustrations. Recently, Williams slammed the readers of George RR Martin's 'A Song of Ice and Fire' for always spoiling the show for those who haven't read the series.

Williams, who plays Arya Stark in the series, told TV Line that readers who never fail to spoil the show should stop and allow the viewers to enjoy the series. While she understands that book readers have a certain authority for being able to read the story first, they do not have a reason "to be mean about it."

The latest rant of the 'Game of Thrones' cast member has been triggered by the readers' negative reactions towards the producers' decision to remove Lady Stoneheart from 'Game of Thrones' season 5 even if she's in the book.

The English beauty thinks it is amusing when book readers find out that the show's creative team did some tweaks to the story. "So the show's really bad now. But really, they just feel insecure because they're used to knowing what's coming next," she told TV Line.

When asked about the fate of Arya in the upcoming season, Williams says that her character is unstoppable in unleashing her anger for those who have pained her in the past. "She knows this world, she knows who to trust and she's ready to go off on her own," she revealed in the same interview.

"Game of Thrones" season 5 is expected to be aired beginning spring 2015.

Previously, Williams expressed her disappointment when she wasn't granted access to the British Airways lounge for being a minor.