No one’s saying you have to shout, but you certainly won’t be able to keep quiet, not now. You have something on your mind, and you’re not at all willing to bury it. Not again. Your best bet is to talk with the person in question right now and, without pulling any punches or trying to sugarcoat it, let them know exactly what you expect from them. If they can handle it, so much the better. You’ll probably be closer afterward.