To respond to the headline, no. She’s not being racially profiled; she’s being conformity-profiled.
But yes, this is cultural appropriation and yes this is just another clueless teenage white dork and yes her mother verges on racism. Isn’t the most important question: why the hell does the school care about this girl’s hair? If schools focused the attention on education that they focus on girls’ spaghetti-strap dresses and boys’ Mohawk haircuts, they could teach important things like math and reading and judgment and a sense of what is important in the world and what is window-dressing. And when to ignore the clueless dorks and just get on with your mission.