"Vindication?"
"One day when I took over dominion of this place I remembered something from our time during the Evolved experiments. Specifically, something about you. We treated you terribly, and I now recognise that what we did to you was awful. But no matter what happened, you never seemed to give up. You never stopped pushing forward until you achieved your goals, which were admittedly little more than escape. But the fact that you're here now, means that in a twisted way you became strong enough to fight as a result."
"I don't think that's quite what caused it, but thanks I guess?"