There are no visible bodyguards surrounding them in the picture, but it is easy to imagine there must be. She always brings security every time she's here, to keep an eye on her - at a proper distance. The article doesn't say anything about it either.
It is also remarkable that she chose a table next to the window... anyone who walks along Callao Av. could see her, so could the papparazzos...however, i believe she was not seeking for a particular privacy, if not she would have asked for delivery!! Hahaha now seriously, this does not entitle photographers to chase her, but this was to be expected...