When I met Twyla in 1984 she claimed to be Seneca and Scottish-American. She told me she was sent away to boarding school as a young girl, and only went back to live among the Seneca when she was older. She was already in with some frauds when I met her, and her self-published booklets from that time are full of nuage platitudes and stuff she seems to have just made up; they don't resemble any Seneca ways that I know of.
A few years later she got kicked out of her community for selling fake tribal memberships and enabling frauds like Jamie Sams and Lynn Andrews. I would not be surprised to hear she had said all kinds of weird things later in her life. She changed so quickly, and so badly, in such a short period of time. When I met her she seemed like a sweet old lady, and relatively harmless, but the things I heard later... EEEK. Now, we have hundreds (thousands?) of frauds that she encouraged and sheltered and led into exploitation. It's really horrible and sad. I feel really sorry for her relatives; the ones I met seemed like really nice people. (Note, these were young Seneca people from her community, NOT any of the creeps who jumped on the fraud train with her. Her fraud crew looks to me to be entirely non-Native.)