You have to read the opinion and see the references they used in determining her citizenship status before stating what you do.
Have you done that? My guess is not.
Of course I have. I'm not saying she was not a natural born citizen, she was. But that was not the issue in her case. The issue was "is she a citizen". Being a natural born citizen obviously means she was a citizen. But she could have been merely "native born", had her parents not been naturalized when she was born, say if they'd been legal resident aliens, like the parents of the Governor of Louisiana were when he was born, and she'd still be a citizen, and still entitled to a US passport and admission to the US, which was the real issue in her case. The court could thus have delared her to be a native born citizen, which she also was, and the result/finding would have been the same.