"I'm aware it's a month. I am not sure why it is a month, and an unpleasant one at that."

Well, Javert is staring a bit blankly as he tries to remember what that means she probably does. He knows it's very different from any engineer he would know, but he decides it's better not to ask for clarification and instead move on to a more important subject.

"Can you fire a pistol, or use any other form of weaponry?" She's not going anywhere with him if she can't defend herself.