Apparently she worked and lived in FL for a non-profit that is thought to be a front organization for the Russian mob. Obtaining 4 passports can't be easy, especially with 3 different names. She claims her employer fabricated her documents. The Russian mob and CIA certainly would have such resources. As usual, the UK press has much more detail than the US presstitutes.
https://www.dailymail.co.uk/news/article-11149921/FBI-probing-Ukrainian-immigrant-posed-Rothschild-heiress-Mar-Lago.html
Inventing Anna: Ukrainian-Born Scammer Posed with Trump and Wandered Mar-a-Lago
Comprehensive reporting by the Organized Crime and Corruption Reporting Project with the The Pittsburgh Post-Gazette.