Ok, I'm going to wait for confirmation from Mad Ivan on this. I'm a bit skeptical. My brother certainly didn't need air conditioning. He's skinny as a rail and even during hotter weather wore thermals under his clothes.
What she is saying is partially true - yes "Doritos" and tortillas are common, and Oreos are becoming more common here as of late. As for the appliances being bigger, I wonder what planet she is on - I visit family in America and the appliances are huge in comparison to ours. The only place you can get, that I am aware of, American sized appliances is at Harrods, where you can get American appliances converted for British electricity. Which, as you might imagine, are extremely expensive. So either she is not telling the truth, or she is very rich, in which case she's one of these champagne socialists who can't be taken seriously anyway.
Regards, Ivan
Please note cubic feet dimensions - this is what you find in most British homes.
There are a few US style fridges on the site, but note the price on the "side by side":
As you might imagine, most people choose not to pay that much for a fridge. As I say, she must be pretty well off.
Regards, Ivan