Wait. . .you mean the girl you were trying to defend and stand up for (the sisterhood chair) is pissed that you were doing just that?????
And instead of politely and PRIVATELY saying "Thanks, but you know, I don't need for you to do that. It's all OK" they are taking you to standards? And instead of the other sisters thinking "you know, that's really not nice for me to do. Maybe I should change my behavior", they are taking you to standards? Exactly what standard did you violate? Surely not something in your GLO's creed or purpose?
Hmmmm......you know, from what I've seen/heard/learned, the chapters that "freak out" when a member speaks to a national officer about something they do (and apparently want to 'scare you into silence') is an environment that will allow hazing to grow and prosper. (Not saying that is exactly what's happening with your chapter, but I've heard similar stories from chapters who have some 'bad' secrets they keep)
Let us know what happens.