Should Fergie relinquish being a British subject and become US citizen?

Should the Duchess of York denounce Queen and country that has treated her so badly to become a US citizen? She loves the US and makes tons of money in the US, whereas the UK hates her and vilifies her daily. She is a bit of a joke the way she begs money off people, but that's because Queen Liz ordered her cut off from financial and emotional support from the palace years ago.