User blog comment:IamJakuhoRaikoben/Chapter 411: Quid Pro Quo, Review./@comment-24102956-20141205163259/@comment-7418318-20141206121839

You could do that in BG too, though I'd suggest first giving the necklace back to reap the completion XP and reward before killing her. Since she's alone in her house, nobody should notice, though you do get a alignment shift towards evil. I haven't tried it in that place, but there are many other places in the game where things like that do work.