What about the scene when Ursula is 13, I think, and visiting Izzie in London. Izzie is driving and busy turning the car around for some reason, and meanwhile Ursula sees her mother emerge from a hotel, wearing her mink coat, on the arm of a well-dressed man. I read the kindle version, so I haven't been able to go back yet and find that part. I don't think we ever get an explanation for that scene.