Happersett v minor
The Constitution does not, in words, say who shall be natural-born citizens. Resort must be had elsewhere to ascertain that. At common-law, with the nomenclature of which the framers of the Constitution were familiar, it was never doubted that all children born in a country of parents who were its citizens became themselves, upon their birth, citizens also. These were natives, or natural-born citizens, as distinguished from aliens or foreigners. Some authorities go further and include as citizens children born within the jurisdiction without reference to the citizenship of their [88 U.S. 162, 168] parents. As to this class there have been doubts, but never as to the first. For the purposes of this case it is not necessary to solve these doubts. It is sufficient for everything we have now to consider that all children born of citizen parents within the jurisdiction are themselves citizens. The words ‘all children’ are certainly as comprehensive, when used in this connection, as ‘all persons,’ and if females are included in the last they must be in the first. That they are included in the last is not denied. In fact the whole argument of the plaintiffs proceeds upon that idea.[iv] (Emphasis added)
Better yet, If you are so convinced she is not eligible to run, why haven't you or a posse' filed a lawsuit attempting to prohibit her to run due to your claim that she does not meet the "Natural Citizen" clause?