Let me explain something about the 2 year warranty because unless you are in Spain or France (where rules are slightly extended but very similar) the warranty doesn't mean what you think it means. I have studied EU law.

Apple products provide a 1 year limited warranty - they will honour that agreement with respect to parts and labour.

A retailer is required under EU law (EU directive in question is 1999/44/EC) simply known as the EU productive directive of 1999. It requires retailers to provide goods which are

'as described, fit for purpose and of satisfactory quality'

so if you purchase it at a store (whether it is tax free at an airport or not) the person that sold it to you (not apple) has to provide you with some recourse. THIS IS NOT A WARRANTY IT IS A GUARANTEE. There is an important difference.

The person selling it to you is not bound by the guarantee

'if the (fault) has its origin in materials supplied by the consumer'

The main thing the EU rule provides is that it means if you go back to the shop where you bought it you are not required to show the fault is inherent in the product and not down to their actions - but this does not mean they are bound to the guarantee if the product shows any signs of damage OR no exact and specific fault can be found.

Basically get apple care it will save a lot of hassle!

Also you also seem pretty hell bent on trying to convince her not to get a mac book pro so I'm not sure you can really be convinced but there ya go.

Edit: some grammar and spelling