Oh I totally get the frustration LOL I can succumb to that as well, but the awesomeness of the episode just plainly washed over that tiny detail of annoyance. I prefer to think that Dean didn't give her their location but that she located them via their cellphone tracking. Just like Sam and Dean feared Gordon would track them down via their cell signal, so they destroyed their phones, I think that's exactly what happened with Bela, rather than Dean giving up their location.