I would hate for anyone to become upset or fed up with her because her English is not the best.
I agree, nilfun! My grandparents immigrated to the U.S. from Greece and never did learn English, so as a child I learned Greek so I could communicate with my grandmother. My only point -- and I really don't want to sound like I'm bashing anyone -- is that if someone is going to work in the service industry of a country where they come in contact with the public every day, then it is necessary for them to speak the language of that country well enough to understand and be understood. When I went to Paris, I learned how to ask "do you speak English?" because I speak very little French. Some shopkeepers said "non" and turned their backs on me immediately. I did not take offense. I just went on and shopped where I could be understood. If I lived in Paris I would make learning French a high priority and until I was comfortable with the language I would not try to get a job where I would have to speak it all day, in a high-intensity environment.
Nina