Did she?
I mean, the reason she went out and collected the ones she collected was because her power told her they were going to DIE.
And yeah, being imprisoned by elves isn't great. But it's seems pretty nice, peaceful and safe. Beats being torn apart by monsters or starving in poverty or dying to a plague or whatever was going to kill them before.
We don't know SHIT about the Administrators or what they want. We've only met one and all we know about her is what she's told Kumoko, which could be 100% bullshit for all we know.
And even if D was telling the truth, the one thing she did tell us is that this world's Hero and Demon Lord both hated her so much that they teamed up to try and kill her. Which, if your world's chief good guy and bad guy agree you had to go, you're probably fucking awful.