French pronounciation

Today a lady phoned to ask about our gites. She said she was french, and she spoke french, and asked about the nearest railway station. It was my twelve year old who dealt with her...and he offered Cahors and Gourdon as possible locations. When she asked the departement he said Le Lot, and she contradicted his pronunciation, saying "Non, Le Lo"
Well, he's fairly polite so he didn't argue the point, but being as we live and work here and that is the name of both the river and the departement, as pronounced by everyone around here I wondered if maybe the lady had been from Switzerland or Canada or some place like that.