Their colleagues consider Hanku too straightforward and thus pity Amata when she berates him, but here Hanku instead chose such a roundabout way of trying to get him to notice she knows. I wonder why. It doesn't seem to fit her personality, especially since she decided to draw a line between their job and private lives, like she said a few chapters ago. So, why try to bring it up at all? Was she perhaps thinking Amata would want the secret revealed, even though she didn't really care about it herself?