I would have to agree with most of the other comments here, I love being told good girl, i find it makes me light up and makes me want to work harder to hear it. this being said, i understand that some actions and phrases dont work well and may give the wrong impression from what our Dom/Dommes may have intended. its always best to be open with them, about everything, then they will know to use a different phrase for rewarding and maybe use good girl as a humiliation tactic.