I can tell you as a hider myself being confronted is the worst. It's supper hard if you are not ready to stop drinking and feel judged even if the person confronting you is doing it in love. So don't lose heart and be as gentle as you can. The first conversation cone go two ways. It can open up the conversation and make a change for the better or it can make the person drinking drink even harder due to guilt and anger. It's not an easy situation I know first hand.