It will take a lot of money for her to find you, find your assets, then get lawyers to take you to court, all with the uncertainty that she can convince a court to give her any of your money. For example, if she tries to hire an attorney in the US she'll be asked to put up, maybe $5000 as an advance payment on their time and expenses and that might only cover 10 hours of their work. Just getting apostles will drive her crazy. You could also move to a new address, telling as few people as possible, change your accounts to other banks, maybe put your money in a trust, change your passwords, phone numbers, etc. Please let us know how it works out. Good luck.