Is your Mom your biological Mom or an adopted parent/step Mom? Either way your white Mom is still very materialistic if she thinks money is what defines wealth. That is fucked up that she said that. What a rude arrogant hateful thing to say! Obviously she is prejudice or better yet racist towards indigenous people if she's been this way around you your whole life. It is part of the racist white man culture that has institutionalized her. She is toxic no doubt and it is best that you don't associate with her. Disowning toxic family is hard I know but sometimes it is for the best.