[h1][img]http://i1383.photobucket.com/albums/ah281/Q-C0ntinuum/BlessedWraith%20Weaver%20-%20Copy_zps7aq7ebmi.jpg[/img] BlessedWrath (Weaver)[/h1]
Assuming she remains in captivity for three weeks, I do have plans for how Sam will react and change. I also have plans for Mantovani.

Sam, whether she wants to or not, will be forced to use her powers regularly. This is despite her weakness. Mantovani has plans for mitigating that anyway, and will attempt to exploit any benefits she can give him. After three weeks of this, there will be certain changes which will be quite understandable, given the circumstances.

If she seems too bitter or resentful, try to imagine how your characters would react to that kind of imprisonment. Sure, she was accustomed to being held in the institution, but...they didn't have guns.