[As incredible as her insistence on 'magic' is what bothers him more is the possibility that she is willfully withholding information from him. He observes her carefully. Could she be compromised?]

I needn't remind you of the value of accurate information in a situation like this? [How much it bothers him to not have all the data available.]

What project... that at least shouldn't be too much to ask...

[If he can no longer rely on her... well, he doesn't want to have to contemplate that right now.]