There's no way she wasn't angling for SOMETHING. The only thing of value to her would be your valuables, which she could sell for cash, or STRAIGHT CASH HOMEY. I've encountered some situations in Rio where some girls actually didn't take money or anything else, but provided the "girlfriend experience" for a guy's stay. If he was getting something to eat, he fed her too, just like you'd do your girl. It's hard to know what the deal is until you take her back to the spot with you...
"The best kind of pride is that which compels a man to do his best when no one is watching."