You could hear that she was genuinely taken back by his chins comment, but it works both ways. We always hear her talking down to him and calling him greedy / waster etc but as soon as she's taken to task it's "taken out of context" or "owa bantaa".
Also following the scene of her irritating the tit out of Sean on the Xbox, she said that he starts annoying her when he's shouting at the game and she wants him to shut up... But she's literally sat there squawking in his face, like a demented budgie, as he's trying to play.
I find them mentally conflicting to watch. Like it's entertaining to watch them be utterly miserable together, but it's also kinda sad.