Oooh, do you know who Dalla spies for, or is she just.. OUT SPYING? Maybe they can be suspicious of each other but they can't say or do anything about it because it'll just blow their covers?
GOOD. They need friends! I suspect Nahema will be the more friend-ish one and Arif by extension (friends with my wife, that makes you my friend too). He's just a bit too busy to be socializing, and her peacetime profession is quite conducive to it.