So you have not actually done the quest as Larian made it but you still want them to change things?

1 the girl be a drow her life be about culling the weak

2 yes when you meet her in act 1 she comes across as bat shit nutts

3 yes in her heart she is (mostly) evil... if you played bg1&2 then this gives you Victoria vibes

Now all I'm saying is there is more to the girl and it's worth doing her story because it's not that black and white... don't want an evil bitch in your party = fine that's your choice and I support it but don't ask for content to be removed without at least trying it

Luke Skywalker: I don't, I don't believe it.
Yoda: That is why you failed.