Indeed she is.
Did I miss something?
Yes. The birthers have created a fictional definition of Natural Born Citizen, one that requires both parents to have been U.S. Citizens. This definition was created specifically to be a standard of eligibility that Obama could not possibly meet. It is found nowhere in the U.S. Constitution or any established case law. The birthers like to pretend that this has been the Law of the Land since time immemorial though nobody outside of the birther circus is buying it. Not any of Obama's opponents in the primaries and general election, not anyone in the previous administration, not the Chief Justice of the Supreme court who swore Obama in and not any of the 62+ and counting eligibility cases against Obama that have all been denied or dismissed.
So, yes, according to the current law, your daughter is a natural born citizen. According to the birthers, she's not. The birthers are currently 0-62 in the courtroom.
“My first wife was German, never got natualized as American, but our daughter is 100% natural born U.S. Citizen.”
Sorry, but your daughter is not a NBC, but she is certainly
a native born citizen.