Lovely scene, and Sansa can be a wonderful character. She would be to me as well if it seemed she cared at all about Arya. I could forgive her for being a spoiled, naive 11 year old, but being such a brat to her own little sister and then thinking nothing of it... she didn't even think to ask if Arya was all right after their father was arrested. I've only read the first book and was too depressed by what happens in them to read the others so I don't know, but unless she does or even thinks something to show she is at all worried about her sister, I can't think well of her no matter how sorry I feel for her.
Either way, though, this is so beautiful, and you did an awesome job!
Yep, I don't like really much Littlefinger, but he is one of the best characters ever. And I really can't figure out how his story will end. Maybe he'll die (courtesy of Sansa?) maybe he'll win everything. Who knows.