She was a citizen. But if one parent is a foreigner, the law states that the American parent must live in the United States at least five years after his/her 16th birthday BEFORE the child in question is born. Obmama’s mother was not old enough to give Barack “natural born citizen” status, just “citizen” status (supposedly). There is NO QUESTION by anyone, and never has been, that Obama was not a “natural born” citizen. Just a citizen, at best.
The law you are quoting applies only to children born OUTSIDE the United States.
Hawaii was part of the United States when Obama was born and Miami was a part of the United States when Rubio was born.