There is not enough Costa Coffee in the world to prepare you for your mother to arrive in Europe from the America's. I arrived at the airport in black and white striped shorts, looking very Martha's Vineyard, but classy. And out she walked straight from her 17 hour flight just having passed through customs.
I find there are a number of hard things to explain to your mother. The first being how you can live in Spain for four months and still not be able to speak conversational Spanish. And, as I said to her, “madre I could have a fluent conversation with a two year old.” I know what “bolsa” means! And, once I overheard my teacher tell a student, “tu eres tarde” and knew exactly what that meant. So, suck on that.