[marciobarbalho]

Thank you mates.

Hmm... I was hoping that slang could mean something like this:
she was watching someone else's life without permission, like a big brother TV show. She put cameras in her friend's house and then it was possible to see what that person was doing. Then a friend found out what she did and then said: She's a nightingale.

What do you think? Did I misunderstand? Is there another word "close" or similar to nightingale that can match with that description I just did.

Thank you very much