Molly, couldn't agree more... I rolled my eyes at the bit with Joseph's marriage cert and the photo with the girls.
Tracy is no a actress, so I'm surprised she hadn't seen the photo of Joseph and the girls before and as she knew her nan had three sisters, she should have been able to pick her out age wise.
Nick, I think Tracy was surpressing a lot of her normal behaviour, she is usually quite different if you know what I mean