The USA charges people it evacuates from war zones, and may or may not do so at all. It is not obligated to do so.<p>Additionally, if she has dual citizenship, she would get it for free from the UK anyway even if she lives in Spain.<p>People with British passports also have 90-day visa free access under the Visa waiver program. Unless she intends to move there, there aren&#x27;t really any benefits to being a US citizen, and certainly nothing that can justify extra-territorial taxation. She gets no services from the US government.