ill_be_strong –
I don’t get what the problem with bringing it up here could possibly be. No one could possibly find out who she is talking about. She wasn’t being motzi la’az on any group or anything, she was talking about one individual. And in retrospect, you see there is value in the fact that she did so, because she found out that there could be a limud zechus. And the fact that she is willing to accept a limud zechus shows that her intention in the first place was not simply to rant, but also to ask if anyone could help her be melamed zechus. Does the Chofetz Chaim say that even with all these considerations she was wrong?