She represents a mayan courtesan/noblewoman (the nature of the distinction is discussed by Houston here: https://mayadecipherment.com/2014/06/08/courtesans-and-carnal-commerce/) of the classical and late classical period, so roughly coinciding with the time period of the original game.
You con spot the cranial elongation and nasal extension, while most of the other decoration is composite (which is to say different parts are taken from different sources), mainly from ceramic pieces from Tikal and Ik (the latter a minor client kingdom of the former). Typically, elite women seemed to have shown themselves in their natural skin color or painted themselves in red, white or a combination of either. There is a vast catalogue of hairstyles and decorations.
This has little to do with the Aztecs in any of the way you wish to understand them (Late nahua who arrived from Aztlan, Nahua of the Triple Alliance or the Mexica specifically).