Last thing we heard about her, she tried to kill her sister and then went rogue and killed a bear and vowed to never love again.
Now she's being all level-headed and loyal to the Horde without any attempt at backstabbing anyone. Even when she retreats at the Broken Shore, she does so to save the Horde, not to fall in the back of the Alliance. Why is she such a loyal and honorable person all of a sudden? This is a complete 180 from her previous character.