Hello Mike! First thing you need to learn is not to care. Later... when you have the courage you will no longer need canned openers and routines, but I can see that you are very shy and might need it as a start off. But, back to the beginning. You must understand, that it does not matter whether she heard it or not. If she heard it, she might blow you out. Then what? You will find and open another one. Can't be that every single woman knows that opener now can it?
Don't think about stupid stuffs like this because these are the most harmful and dangerous to your game.