If I recall correctly during my limited evil playthrough, she actually mentions being cut off from the absolute because she's close to the artifact. There's already a thread there to free her from the Absolute and make her a companion without resorting to an evil playthrough. You can play a Lolth-sworn drow as your main character, so there's no reason she can't be pulled in for an "as intended" playthrough. Just needs a few tweaks.
