Answer: Their failure to understand and respect Native American's beliefs, traditions, and cultures.
Step-by-step explanation:
Her teachers in the school had bad reactions on her situation which is showing us that they are not understanding and respecting her culture and tradition.
Violence and brute force in Schools are against the law and they are punished.
This is also showing a sort of discrimination because they didn't even try to understand her situation and tradition so they are immediately shown disrespect of her culture.