**BIGTIME SPOILER ALERT** During the episode, an entire story arc was wiped out during the wedding of Catelyn Stark's brother Edmure to Roslin Frey when the latter's father Walder had King in the North Robb Stark, his wife Talisa and his mother murdered over Robb's broken promise to marry one of his daughters. Robb's army was also ambushed by the forces of House Frey, and many were killed -- along with Robb's Dire Wolf Grey Wind.
Williams, who plays Arya Stark in the hit HBO series, was on her way to the "Red Wedding" to finally reunite with her mother and brother, but made it only as far as the castle gates, arriving too late and in the middle of all the bloodshed.
The 16-year-old Brit posted a short video to her Vine page, trying on a southern accent and giving her reaction. Watch it below and don't forget to turn the sound on (click the little speaker).
"*spoiler ep9*" she wrote.
While the young actress poked fun at the episode, millions of viewers were left in shock over the events of the episode, posting their reactions on Twitter and even YouTube.
"Somewhere, there's a couple all of a sudden reconsidering their Game of Thrones-themed wedding," tweeted one; while another angry fan wrote, "Game of Thrones can go f**k itself 20 times in the face with a fork. Done with this piece of s**t."
Rest assured though, there's more awesomeness to come and the loss of these few characters pales in comparison to the story as a whole. Those who read the books shared the same reaction at one time.
But know that in addition to these 26 reasons to keep watching (minor spoilers), fans who have gotten through the fifth book in George R.R. Martin's "A Song of Ice and Fire" saga must wait out the fate of a few more big characters until the next book -- which isn't even on the horizon yet -- arrives.