She should feel humiliated for not having learned English.
It used to be that “humiliation”, ie, being humbled,
was the result of a righteous rebuke. If the rebuke wasn’t valid, then there’s no reason to be “humiliated”.
Also, the action following such humiliation, or humbling, was to change the reason you were rebuked, ie, LEARN ENGLISH.
30 years in the US and she STILL didn't speak English?? I not only find that very hard to believe, but I think this was a setup. I learned enough Czech in about six months to be able to sing with a Czech folk group, and it's one of the most difficult languages in the world. She probably spoke good English, but was trying to get the traffic cop in trouble. What a joke.