Dear god. In one fell swoop, she has become more vile than just about every villainess in any of these mangas...
Combined.
Jesus Christ, talk about jumping off the slippery slope. I dearly hope this blows up in her face big time, and she doesn't just Mary Sue her way past any of the obvious issues like so many of these villainesses do. If what she just did isn't destroyed utterly, and soon, she will have done infinitely more damage to this world than the original villainess ever could have in a thousand lifetimes, and for much worse reasons.
Christ, at least those Isekai protagonists that engage in slavery are just being part of the problem. She's gone out of her way to find whole new frontiers of despicable evil. I dearly hope that this plan of hers becomes an albatross around her neck.