Gosh - maybe I"m the one that needs help coz I'm thinking, depending on just how deep and dark that water is, it could hide a LOT of things: like bodies!
My younger sister used to try and humiliate me in public situations. Unfortunately it was because she had such low self-esteem and feelings of inadequecy, she felt tearing others down would only make her look and/or feel better. All one can do for ppl like them is say a prayer they get the help they need and move on with our lives.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"