She's a white woman who enjoyed all the privileges of being white and faced none of the adversity of being a Native American who used her "minority status" to gain advantage for herself, likely at the expense of an actual minority who the system was designed to advance. She deserves every bit of mockery she gets for that. As do the other clowns like Rachel Dolezal and Shaun King.
You're not the gatekeeper of that. If she has Native blood and identifies with it, nobody should say shit to her.
She's got one Native American allegedly somewhere distant down her family tree. Statistically, I'm likely to be as black or more black than Elizabeth Warren is native American.
Can I start calling myself a black man?
I wouldn't fault you for saying you identify with blackness to a degree. Distant is not non-existent. ---