One could think that with all the layers of security they have hanging around, the CIA might be the kind of place whose mages didn't end up kidnapped.
She knew that wasn't the case already, of course - not an uncommon element in television plots, and people get their blackmarket field mages somehow. Which is a different sort of thing than having it happen specifically to her.
As far as one can get, with the baseline of 'kidnapped field mage', she seems to get lucky. Her kidnappers don't start torturing her to death or anything like that (that would take some spectacular bad luck - it would be rather idiotic to go to the absurd trouble and expense of kidnapping a field mage if that was what you wanted. Not that that would have helped her, had they wanted it with her.)
They let her have her four days, don't try to get magic work out of her while the law says she'd better not be giving it to them. Keep her in light restraints except when they swap out the CIA collar for theirs; get her food and water. Give her a mat to sleep on, even, and a book for the day, that being unusual luck and then some she's pretty sure, for waiting out the days. (It's not a very interesting book. She sits against the wall and comes up with ways to encode some page of it with some other part.) Forbearing enough that she doesn't earn herself more than cursory blows.
And then it's been four days, and they show her so and all that, and she supposes she's going to get to find out what they want her for.