sokolov, did your friend have no cash or credit cards? Does she speak or understand English?

I ask because maybe the shops and restaurants were closed in that terminal, but I doubt the vending machines and water fountains were. Had she ventured past her gate and terminal she would have found shops to buy food, a toothbrush and even underwear and a neck pillow to make her airport stay a little more pleasant.

I just find it surprising that an adult can't fend for herself in an airport. They're designed for stranded travelers. But now despite this unpleasant experience, your friend can probably prepare better. For instance, always carry on a toothbrush!