I read it a few years ago and can't remember the title. Or very much of the plot either! But I remember really enjoying it and I think it was part of a series. At the start the female protagonist escapes alone from some sort of ritualistic sacrifice because he grandmother dresses like her and fools the men in charge... I think the protagonist could change into a wolf? or she was wearing a wolf skin cloak. After that she ends up in a city where i think she saves someone from rape. Theres a show down towards the end in some woods... But theres only the protagonist and her male friend.

If anyone recognises this I'll be seriously impressed, my description sucks!