I was with a girl today who I've never been with before... and most things would lead me to believe I was doing things right (while I was fingering/down on her). Deep/heavy breathing, and her hips moving up and down... but she didn't moan any... and I'm used to hearing that.

Are some girls just quieter than others?

Any advice on either telling if I'm being useless, or getting some auditory response would be appreciated.