In the A Song of Ice and Fire novels, Sansa is never in Winterfell at this time; a character named Jeyne Poole (posing as Arya Stark) is the one forced to marry Ramsay.
The episode follows several major storylines across Westeros and Essos:
Jaime Lannister and Bronn attempt to "rescue" Myrcella Baratheon from Dorne but are intercepted by the Sand Snakes. The ensuing fight ends in a stalemate as they are all arrested by Areo Hotah. got_5x06
Sansa Stark is forced to marry Ramsay Bolton in the Winterfell godswood. The episode ends with a traumatic scene where Ramsay rapes Sansa while forcing Theon Greyjoy (Reek) to watch.
"I am Sansa Stark of Winterfell. This is my home, and you can't frighten me." — Sansa Stark In the A Song of Ice and Fire
The episode received significant backlash, primarily due to the treatment of Sansa Stark. Critics and fans argued that the sexual violence was unnecessary for her character arc and felt like "gratuitous suffering".
Arya continues her training at the House of Black and White, learning the "Game of Faces" from the Waif and finally being allowed to enter the room of faces by Jaqen H’ghar. Fan & Critic Reception Sansa Stark is forced to marry Ramsay Bolton
Game of Thrones Season 5, Episode 6, titled remains one of the most controversial and highly debated episodes in the series' history. Plot Overview & Key Events