Probably a boring answer but I know my grandmother’s credit card information. I live with and help take care of her, so she doesn’t mind sharing it with me. Not like I’m planning to do anything nefarious, but I guess technically it could ruin her financially.
There’s hopefully some context you’re leaving out for the sake of privacy or something, but… Why would your ex consider a move to Europe for your work? I wouldn’t even expect my wife to be 100% on board with uprooting her entire life to move halfway across the world.
I dont think they’re saying they expect her to. They appear to just be describing what’s happening.
As to why, probably custody arrangements and anti-kidnapping laws and treaties.