If your wife sees you creating a new account she doesn’t have access to and funneling money into it, of course that’s going to create friction.
To me, it’s not worth it UNLESS it accomplishes your goal of securing money in case of divorce. So, whether it’s a good move is tied to the legalities. I’m assuming she or her family or a friend will at some point direct her to an attorney who will do any finding and pursuing for her.
