At the beginning of the role of Sansa Stark, I believe that most people's first feeling is really disgust. Because Sansa's early performance gives us the feeling of vanity and stupidity. But because of this, this role modeling is undoubtedly very successful, whether it is in the play or the original book, Sansa Stark's later reversal is worth applauding.

In the play Sansa Stark, is a simple girl, since witnessing her father being ordered to beheaded by the beloved Joffrey, the inner drama has begun to change, the inner details of Sansa in the play are not so comprehensive, and Sansa in the original book, for the details of the inner description, Martin undoubtedly proved his success.
For example, in the original book, Sansa was initially invited by Joffrey's big wedding, because she did not trust little rose in the end, when the little demon was seriously injured because of the guardianship of King's Landing, and could not rescue her.
The hound Cregan tried to take her away after the Battle of the Blackwater River, Sansa refused, in the original Sansa was particularly eager for the hound to be around at this time, and even Sansa hid the hound's clothes around, from which we can see that Sansa is full of good feelings for the hound, in that environment.
And when Sansa left King's Landing and went to the valley, in the play we all thought that Sansa would become the lord of the valley in the valley, under the tutelage of Littlefinger, but then she was sent to the bed of little skinning. In the original work, Sansa Stark has a lot of inner details, and she is also a conspirator of varys's level in the power game. Because in King's Landing, she learned to be patient, learned to lie, and learned to observe, Sansa followed Littlefinger to the valley, and unlike in the play, Sansa in the valley has been observing, distinguishing between those who are Littlefinger's allies and which are enemies. She began to wonder what Littlefinger wanted from her. The details of all these means are not even learned by Cersei in the original book. In the play, all the growth of Sansa is attributed to the awakening of the mind, in the original work, Sansa is a step-by-step observation and calculation, only to become the premier strategist and become the queen of the north. In short, whether outside the play or the original, Sansa is undoubtedly a highly reversed character, thus gaining a large number of fans.
So how did Sansa Stark move from despair to hope?
From the moment King Robert came to Winterfell, Sansa fell in love with Joffrey and showed her personal vanity, bent on becoming Joffrey's wife and queen of King's Landing. And in arya's case with the butcher's brother, Sansa speaks to Joffrey and lies, causing her own wolf to be killed. Even in King's Landing, when Stark was in danger, he still dreamed of becoming the Queen of King's Landing. All of Sansa's thoughts were on Joffrey, but in the end all her wishes were shattered by Joffrey. When her father died, her love for Joffrey began to gradually turn into hatred and she tried to die with Joffrey.
For Sansa, I went from hating it at the beginning to my heartache and liking it later, especially after reading the original book.
After her father's death, because Arya escaped from King's Landing with the help of the Night's Watch, Sansa became alone in King's Landing, although there were little demons, hounds, little fingers, etc., but these people's protection was undoubtedly for their own rights and interests. She was repeatedly humiliated by Joffrey, and then from being nominally queen to being dissolved, and Sansa was full of joy at the time, but Dontos poured a basin of cold water on her, which was even worse, because the king had the right to sleep with any woman, but you will be pregnant with a wild seed. Later, when she met the Queen of Thorns, Sansa was cautious in everything she did in King's Landing.
We all know that the later Stark, in fact, there is only Sansa alone. His father died in King's Landing, Robb died at the Red Wedding, his mother later became Lady Stoneheart, and finally died, and Little Rickon died in the Battle of the Bastards.
In the end, only Bran and Arya remained, and Snow, whose own blood was not pure Stark, half targaryen, and finally became the Night's Watch. Bran became the Three-Eyed Raven, no longer counted as Stark, and Arya became the Faceless, with her latest identity, and the only remaining Stark in the North was Sansa Stark.