Actually, white Americans (the ones you would most reasonably compare to the British) have on average about 1-2 IQ points on the Brits.
She needs to make the acquaintance of some yobs and chavs.
What an Errhead
Some of my Brit in-laws are very intelligent, some are not. But they're all steeped in liberal beliefs that make them ignorant on a variety of subjects. One of my in-laws firmly believes that Michael Moore is a great truth-teller. He read Moore's book, or section, concerning the 2000 prez election, and asked me why all those "crimes" were allowed to happen. I rebutted everyone of Moore's more outrageous lies (the scaring off of Black voters in Miami for example was one of the most egregious Moore falsehoods.) I don't know if he believed me, but he obviously had not read any literature contradicting Moore.