You did the right thing by not arguing with her. You are right, but there are more factors involved with just dropping the shoulder. Go to Coach Joe Slowinski's website and also subscribe to his Facebook page, Drop Your Damn Shoulder! There is much more involved, but with practice (lots of practice) it can revolutionize the game if a bowler chooses to impliment this system. I'm trying to do it, very technical, but the more you practice it, the more natural it feels...I'm just not there yet, but getting there slowly.