First, figure out if she is a U.S. citizen. For that, when she was born her father must have been a U.S. citizen, and he must have been present in the U.S. for at least 5 years, including 2 years after his 14th birthday, (not necessarily continuously) prior to her birth.
If she is a U.S. citizen, try to apply for a U.S. passport and/or a Certificate of Citizenship for her. Or you can try to apply for a CRBA from the U.S. consulate in the original country; I'm not sure if you can apply remotely though.
rica30 reacted to newacct in Husband is a US citizen and father to our baby born abroad. What to do now?