Her name is Noah Grace.
Edit--this is not the explanation that I gave to the woman at the park, it is strictly just for this post.
It is male and female name in the bible with the Hebrew pronunciation of the male Noah being different than the pronunciation of the female Noah (which is said more like the English version of the male form of Noah). Noah was one of the five daughters of Zelophehad, who went to the leaders of the nation of Israel and got the law changed so that they could inherit their father's land. It is not just a male name. The female version of Noah means Motion, it has an entirely different meaning than the male form of Noah which is Comfort.
Edit- this was the first time that anyone has had a reaction to my daughter's name, many people actually know females with the name Noah or Noa and aren't shocked by my daughter's name.