I think she's partly Cuban. I'm Hispanic, and sometimes she speaks Spanish during her livestreams. Her accent sounds very Cuban to me, although she could also be Central or South American, probably from the northern part of the region.
A lot of people were already telling her she looked Asian long before this, and she just bought into that narrative. Maybe she's just a Latina girl with Aztec ancestry who thinks she's Asian because she has fair skin.
She's definitely half Japanese. You wouldn't know it to look at her now, because of all the surgery. She used to do MFC shows where she'd speak in Japanese and she talked about visiting there several times.