After the Assembly of First Nations’ national chief complained to Air Canada about how staffers treated her and her ceremonial headdress on a flight this week, she says the airline responded by offering a 15 per cent discount on her next flight. “It must have been a generic response,” Cindy Woodhouse Nepinak said in an interview, calling the entire experience “humiliating” and “unbelievable.” Woodhouse Nepinak said in a social media post Thursday that her headdress and its case were taken away and put in a garbage bag. She clarified Friday the case was removed from the flight, but she was able to hold her headdress throughout the trip after pleading with staff. Air Canada said in a statement Friday morning that it reached out directly to Woodhouse Nepinak to apologize…