[astroAPhi]

It sounds like your advisor needs to realize that she is just that... someone who gives advice. I don't believe our advisor has any true "power", or even a voice in vote. She can tell us how she thinks, and often does, but we can and do go against her when we see fit. I'd check your Constitution/Bylaws for info.

Is there a reason why they're so worried about "image"? If there's a legit reason, think of another way to improve your image, in a much more positive manner.

As for sorority business being out in the open, we've always had a rule that we don't discuss our business in certain places, such as the Student Union Building. Other orgs aren't smart enough to do this and everyone knows their business. But even then we had to crack down on girls telling their boyfriends, etc. Emphasize that it is your business, and why would anyone join if they could know your business without even going to a meeting?