I appreciate you have understand the meaning of "making a big fuss" for this story of the language. I am sure about your best intent for telling us that story, but I would be happy to hear about something real. I bet there are many extraordinary stories that we, non-Arabic people, will be delighted to hear. Even if there is nothing spectacular like a European girl falling in love with Islam because of her boyfriend.
As per verisim comments, please refer to offical languages of the country. In any place of the world there are differences between nearby cities, not to talk about regions of the same country. In Italy you will find out that the Sicilians does not understand the Napolitans and vice versa (this is called dialect not language), and we are talking about the same country. But they are speaking the same language i.e. Italian.
Tired of discussing on this subject,
Best regards