She’s keeping her Austrian citizenship, apparently. Don’t know what kind of tax-exempt status she’ll have while living in London as an Austrian citizen.
When Europe finally goes boom, she will be one of the first ones banging on the Embassy gates.
There are countries and territories around the world that have very low tax rates and I think some have no taxes.I guess they allow certain people,perhaps just the rich,to settle.The thing with renouncing US citizenship is that the US is the only civilized nation on earth that taxes its citizens on *worldwide* income regardless of where they might be living.Most countries don't do that.So as an Austrian she can probably live in one of these places and pay little or nothing in taxes to Austria *or* the country in which she settled.