Hi, I've been using cryptocurrency to send money to my wife in Russian for over a year now. Basically, you deposit USD to your crypto account and convert it to one of the cryptocurrencies. Then, send it to her crypto account and she can withdraw money in Rubles. If you are not sure how to do that, I can help you. If you do not want to deal with cryptocurrency by yourself, people from Let's Russia (https://buy.letsrussia.com/) can help you with transferring money to your wife for you by basically doing the same things I just explained. But you don't have to have an account or anything.