I think saying diaspora “never represent” their home countries is an exaggeration.
All the Iranians in the US I know are first generation immigrants who have been here maybe 5-20 years. I’m not talking about second generation Iranians. They all still have family in Iran. And their views do not differ from their family.
My mother-in-law is the most anti-regime person I know, and she lives in Tehran. A bomb recently exploded nearby and broke all the windows in her house. But life goes on, Iranians are extremely resilient.
Purely historically too of course the USA and Israel are rhe last people whose words I'd trust about wanting to bring "freedom" to a country. The only thing they are experts at are toppling democracies and installing dictators, including in Iran itself.
I think she understands that every movement needs a leader, so she’s ok with Mr. Pahlavi leading that, i.e. a constitutional assembly. But beyond that she doesn’t recognize the monarchy