She's approximately 12,000 years old now, but when she died in the Yucatan Peninsula she was only a teen.
Nicknamed Naia–for the Greek mythological water nymphs–this skeleton has proven to be the oldest ever found in the Americas. For more on this, and other curiosities regarding Paleo-Americans (the ancient kind, not the people buying out all the bone broth) check out the National Geographic article on the First Americans by Glenn Hodges.