I'm a lawyer and I do a small bit of family law, but not much. You need to consult a VERY GOOD family lawyer here in the US. He will need to determine, probably in consultation with an attorney from the other country -- whether you are indeed legally married. Then, if you are, I suspect the divorce proceedings will have to occur in that country if your "wife" is not subject yo jurisdiction here in the US. Do not can't act the consulate of her country. They are obliged to help HER. You lawyer may wish to contact the US consulate or embassy in her country.
Good luck.