I'm sorry but I don't see the point Red Queen is making.
It seems like you're worrying about how other people will play it out, and them 'having it all'.
I think the point of how tough it may be to get to this option has already been pointed out.
I've seen a bunch of posts complaining about using the environs vs mobs, but this is definitely an in-lair encounter if you don't kill her previously, and it's no walk in the park!
I don't know how many folks will actually GET this opportunity, but I think you should be able to deceive her and then drop the hammer on her once and for all.
I'd love it to be an added cinematic actually!
Now, should some groups should let her live if they are Paladin/Lawful Good? - Whatever. 5e took a real step back from Alignment overall. Hell, ya don't even need to be LG to be a Paladin anymore!
How anyone else chooses to play it out doesn't concern me at all.
Personally I hate that old beeyotch!
My first playthrough I ran into her for the first time where the brothers are confronting her and picked the "Tell us what you did to their sister!" dialog!
Second playthrough I saw her in the Druid Grove - attacked her there, nobody even CARED! I managed to kill her before she got off the screen and run away, and that mucked up the whole rest of the game cuz she was DEAD already!
I am disappointed that I didn't find anything to help the teifling she crippled though...
