I think they came from places that hiding the truth will give them more benefit...
Her cousin said she suggested the woman to tell custom that she is "just a friend" so it's "easier" for her to enter. @ @
Here, we are educated to tell the truth.
I crossed the border many times reporting all my purchases and not being taxed. I did get taxed a few times. But when I buy something in the States, I always assum that it will be taxed. When it's not, then I felt like extra bonus.