mjszud
Captain
That makes sense, but I just don't think they would have exchanged the tense looks if that was the case. Plus, Eric knew her hearing aid was interferring with his wires beforehand -- he'd have known that she wouldn't be able to sit there with the squeeling in her ear all night, he'd have known that she'd have to back out of having drinks. His expression didn't seem to say "oh ok, you aren't going because of your hearing aid".I think Natalia was worried about how the wire would interact with her hearing aid and she was afraid that it would give something away if she was constantly grabbing her ear. They all know that her hearing aid is what alerted her to the signal jammer.
I think it's either because she was upset that he didn't trust the team, or because she didn't want to be a part of him spying. She knows the way they all looked at her before when she was the mole -- I'm sure she wouldn't want those looks again if they found out she knew about Eric's investigation.