John Lanchester said this quote

That was the main thing wrong with Mrs. Kamal. She spent such an extraordinary amount of mental energy feeling irritated that it was impossible not to feel irritated in turn. It was oxygen to her, this low-grade dissatisfaction, shading into anger; this sense that things weren't being done correctly, that everything from the traffic noise at night to the temperature of the hot water in the morning to the progress of Mohammed's potty training to the fact that Fatima wasn't being taught to read Urdu, only English, to the fact that Rohinka served only two dishes at dinner the night of her arrival to the cost of the car insurance for the VW Sharan to the fact that Shahid didn't have a 'proper job' and seemed to have no intention of getting one, let alone a wife, to the unfriendliness of London, the fact that it was an 'impossible city,' to the ostentatious way she complained about missing Lahore, especially at dinner time, giving meaningful, sad, reproachful looks at the food Rohinka had cooked.