My guess is she probably threw a fit at customs, and they started looking for a reason to get rid of her, and that's when they asked if she had been drinking. I feel bad for her (and particularly her kid), but you have to educate yourself on the country to which you are travelling. If you're not going to respect their laws and customs then don't go there. From what I've been told about Dubai, they don't mess around with this stuff one bit.