To collect assets located in a state other than the situs of the judgment, it would be my feeling that those assets cannot be used to pay the judgment unless the New York Judgment is transferred to the State which contains the assets.
To go after Mar-A-Lago, a judgment would need to be transferred to Florida. There are limited defenses to entering a foreign judgment but it would take a bit of time.
Ms. James would need a new boyfriend with a background in jurisdictional issues.
She should call Paul Giamatti...