She’s definitely plastic. Looks Persian/Tajik/Uzbek to me - but she could be a Pocahontas.
From this article it says she was adopted by Hmongs, but was ethnically Burmese and Thai:
https://medium.com/illumination/molly-cheng-drowned-herself-and-her-three-children-after-her-husband-killed-himself-736775f6ff48