Imagine that the misfortune and misery of the Stark family hasn't happened yet. They live peacefully in Winterfell, Eddard keeping an eye on the North for the King. Only, this time, imagine a girl running from her past finds herself in Winterfell on accident. She's confronted from every angle by the Starks, but she won't budge. That is, until she finds herself feeling more and more ensnared by the heir to Winterfell, Robb Stark himself.
Disclaimer: Thanks to the brilliant George R.R. Martin for originally creating Westeros and everyone in it. I own none of the characters or locations. Only character that is mine is Rosalie. Enjoy!