Personally I want her because she is merely a victim of the Absolute, not its enforcer. A Lolth Drow that is perfect the way she is and does not need to change because a companion having their own stance makes them much more livelier and believable, which makes the story all the more interesting.
Just like Lae'zel and Astarion for example who are quite argumentative about our actions, which makes it all the more fun.
Alliances have been made on less ^^
