Euro Lady Should Be A Detective

Ok remember the Euro incident before our trip? Well the day we were leaving my aunts needed to exchange some more money...so they went to the money exchange place at our terminal and low and behold the same lady was there...but this time she knew that they we going to Cuba and she refused to exchange there money. How she figured it out??? Don't know!!! She needs to change her profession and be a detective. Hopefully she got a raise for her good work.