[stonecold_1981]

Indeed, the attitude of the FAs on the flight seem reprehensible based on your description of the situation. It looks like they were unprofessional at best and unethical at worst...culminating in an overall, horrible experience for your wife.

That said, I don't see any reason or case of discrimination (race-based or otherwise). In fact, if I were you, I would steer away from jumping to such a conclusion. I would rather focus on the facts in this instance and follow up with a formal complaint to United. You would end up clouding the issues if you mention discrimination since you don't have evidence that those FAs behaved well with all other passengers.

Anyway - that's just my 2 cents