she was white.
my other grandma, my maternal one, also white, had two kids from dudes she wasn't married to - one black, the other mexican.
My mom is a major racist, and hates blacks and mexicans, but her mom, and two sisters got a pass. Granny ended up dying of colon cancer, and she deserved it.
Grandpa worked his ass off to support the abusive drunk, and never treated any of his kids any different. He was a hero.
I learned that racism is mostly just a projection of personal failures and wants onto others, and a desire to fit in.