In the first episode of the first season, we see a Whispered woman being taken away from a Russian facility. Mithril turns up and secures the area before Sousuke injects a sedative into her and takes her away.
We know that Teletha "Tessa" Testarossa is a Whispered and works as the Captain of the Tuatha De Danaan while Chidori is relatively left to her own life (under protection).
What does Mithril do with the Whispered that they rescue? Are they put to work like Tessa, or are they relocated and kept safe in the same way Chidori is (i.e., allowed to live a normal life, but monitored)?