Sophie Turner Salutes 'Game of Thrones' Castmates : 'Arya Really Is That B***h' and More Reactions

Sophie Turner tuned in to the latest episode of Game of Thrones on Sunday night and was full of reactions. The actor, who plays the formidable Sansa Stark, flooded her social media with posts in honor of a few of her co-stars during Season 8's highly anticipated "Long Night," otherwise known as the Battle of Winterfell.

It's been long known that the final season would bring the Night King and his army of White Walkers to Winterfell's doorstep, and in Episode 3, the murderous wights finally arrived. Showrunners previously teased the battle would last an entire episode and the death toll would be through the roof. Turner issued a fair warning to fans before the episode aired on Sunday. Be warned, spoilers for Episode 3 ahead.

"Prepare yourself," she teased on Twitter, adding the hashtag, "#BattleOfWinterfell."

When the heads started rolling on the show, Turner paid tribute to one of the episode's many fallen soldiers, Theon Greyjoy, played by Alfie Allen. Sharing a photo of Allen on Instagram, Turner referenced a quote about the brotherly figure her character Sansa grew up with. "To Alfie and to Theon…'You're a good man.'"

Despite the crimes Theon committed against the Starks in earlier seasons of GOT, the character earned his way back into the good graces of his adoptive family after he helped Sansa (and himself) escape from the grips of Ramsay Bolton (Iwan Rheon) and his crazy girlfriend Myranda (Charlotte Hope) during the Season 5 finale.

On a lighter note, Turner couldn't get over her show-sister Arya Stark's (Maisie Williams) big moment during the episode. Turner shared her snappy reaction on Instagram Stories and tagged Williams to the post. "Arya really is that b***h!" she said. "Yes, you are b***h!"

Arya saved the day—the entire Seven Kingdoms actually—when she took down the Night King in the last moments of the episode. While social media erupted with praise for the character's huge victory, Williams initially wasn't sure how fans would react to someone other than Jon Snow (Kit Harington) killing the White Walker leader.

"It was so unbelievably exciting. But I immediately thought that everybody would hate it; that Arya doesn't deserve it," Williams said in an interview with Entertainment Weekly, released following Sunday night's episode.

"The hardest thing is in any series is when you build up a villain that's so impossible to defeat and then you defeat them. It has to be intelligently done because otherwise people are like, 'Well, [the villain] couldn't have been that bad when some 100-pound girl comes in and stabs him.' You gotta make it cool. And then I told my boyfriend and he was like, 'Mmm, should be Jon though really, shouldn't it?'" she continued.