She's an idiot for abducting a 230 lbs muscle-bound Nord warrior with a Greatsword to a small cabin in the swamp where no one can hear her scream when she presents him with the choice of killing three innocent people and he proceeds to skewer her on that Greatsword.
Epic.Fail.

This. Also, she sits all the way up there, where I can hit her once, wait three seconds for her to come down to kill her, or kill her in the middle of her descending animation.
Also, her end-of-the-questline decision is also beyond idiotic and I thought it was a really cheap ending. Bethesda could have done better, especially with how awesome the DB was in Oblivion.
"You're the one coming after me and my brothers and sisters. But if I sell someone out to save us, you'll leave us alone, you say? Yeah, I'll believe you!" *gets betrayed*