If you're concerned with how guilty each individual consumer in a country should feel look at per capita emissions. If you're interested in stopping climate change effectively look at total emissions.
Well if you're concerned with effectively stopping climate change a quite important part of your calculation is where you can actually persuade people to address the issue. That's a complex calculation, but I think it's far more credible that you can get the policy supported in the US and then enforced internationally through treaties and negotiations with the support of Europe than trying to do a tour persuading China.
It’s certainly notable how she never directs her anger at China or India, but reserves it for Western countries only. She has a very white-centric view of the world.