I am all with you an that, it is permissable and reasonable to provide ID when entering certain restricted areas. It is the law in some cases. So, I don't know why all the hubbub. Again, she is a poor helpless granny, so the correct thing to do is ignore the larger picture and focus on this poor soul and her unfortunate travails and live vicariously through her so all (or some) here can spout out loud all the things they've memorized from reading the papers....
People not having actual business in restricted areas should not be allowed to enter. If you allow them to enter, it's not a restricted area.