She may have gone in there to be out of hte stream of general public; until you came in, was she the only one in there?

I was nonplussed the first time I went into a stall and heard somebody talking merrily away... but then I realized (this was at a bar/restaurant) she was fairly young, and trying to get somebody to pick her up 'cause she didn't like the stuff the crowd she was with was planning on doing, and I thought, "go cell phones!"