ASOS covers a shorter time period than ACOK, but there is a lot in I in terms of Sansa’s foreshadowing and development. BrashCandy is doing the development and here is some of the foreshadowing, much of which expands on previously discussed and foreshadowed points.
In AGOT Sansa makes a statement about dreams being prophetic. We see several chapters in this book with dreams and it would be interesting to see if they are prophetic.
Home and family
This seems to suggest lots of boys and one girl. Throughout Arya’s chapters in ASOS, she is constantly mistaken for Sandor’s son/daughter. Of course Jon also has very Stark features. The two people who don’t are Tyrion and Aegon. (Could this tie into foreshadowing of at least one illigetimate child for Sansa?)
On the morning of Joff’s Wedding she awakes from another dream of family.
Now I am not sure if there is a prophetic meaning to this one, but it highlights the happy home she lost and her desire we have seen from the end of AGOT for Home and the life she had known previously.
Her thoughts regarding the Fingers are also interesting as she finds the place dismal, but safe and friendly. There maybe some foreshadowing that this will be her final home in ASOS
“From here the King turns east for Braavos. Without us.”
“But … my lord, you said … you said we were sailing home.”
There is possible foreshadowing here of Sansa ending up on the Fingers
However there is also the Snow Castle scene, which could easily foreshadow Sansa rebuilding Winterfell.
Joff and Tyrion
Tyrion is twice lumped in her mind with Joff after she escapes and I think it is indicative of the fact that what ever else Tyrion is, he is always going to be a Lannister, even if it is a better one than Joff or Cersei.
Ser Ilyn Payne
Ser Ilyn has featured in Sansa’s chapters almost as much as Sandor. In Sansa’s first ever chapter, she sees Ser Ilyn and then backs into Sandor. Her constant thoughts of him seem to suggest some foreshadowing of a future meeting which could be very unpleasant for Sansa.
Although further discussion of this point by Fireeater also suggested that it may have been foreshadowing of Joff’s death at his own wedding.
Ser Ilyn was meant to be the one who killed Lady, but it was Ned who said she is of the North and
Stories and Tales
This is also the scene where Marg’s Hawk takes down a Heron, while Sansa’s takes down two smaller ducks.
Her escape also echoes an event that could be the basis for a song.
Sansa dared not look down. She kept her eyes on the face of the cliff, making certain of each step before reaching for the next.
Sansa has continually had references to stories in her arc. While they maybe stories, they are based on actual events and it is possible that there is some foreshadowing that she herself will be the subject of one of these songs in the future.