A Lion Amidst Wolves

Tywin's youngest daughter Ryiah, born of another woman, is as cold hearted and cunning as most of her family. Heavily influenced by Cersei she has grown up with a shell hard to crack and an even tougher heart that cannot be penetrated by anyone except her family. But when the Royal family visit Winterfell, is when she starts doubting everthing she's ever known. Slight AU, Jon/OC.