If it is felt that Kathy crossed some line by talking to her sponsor and the members here, and if this is what the comments above are about, I disagree 100%. She is simply asking advise about the conduct of an unnamed person we don't know, no harm no foul. If the quoted comments are what we shouldn't do in real life, where others may know the person we are speaking about then I agree entirely, these are two different things....refrained from talking bad or gossiping about that person behind her / his / their backs. This is something I not only learned in AA but in the household I grew up in.
Talking behind someone's back / gossiping about someone is simply not on since that person is not in the conversation / discussion to defend her / himself and is to me more a refection on the person doing the "back talking / gossiping" than the person being discussed.
With respect to her trying to help the person, since as stated - “...the easier way to ensure both parties get clarity on the situation would be to address the issue with the person concerned directly,” that has been tried. Keep in mind she said things like these - “...I offered the hand of fellowship as she never spoke and seemed alone. She asked me to sponsor her which I did... I'm working on feeling compassion for her...I can't be myself with her, if I am she's constantly asking 'are you alright' what's wrong blah blah and even text me to see if I'm ok.”
All she is trying to do is not hurt the persons feelings, by coming right out and saying she finds them false, and constantly putting on a front or acting, things (some would call defects), which the AA program itself should have taken care of. My feeling is it's a perfectly acceptable question to ask advise about on a forum like this, and many others have asked for similar advise about members of their groups, who they find hard to deal with.