Just look under the Invisibility hider. She's shielded from all forms of technology and most Minervas. It shields her both physically and mentally. But that all depends on how experienced your character is. If he's been around the block a few times then I would think he can sense something if she were close.

Also to touch up on what you mentioned earlier: Janelle is post-op. Not that it would have mattered but I understand how most people are just generally curious about that stuff.