Thanks for your reply! Our sisters before us did not do the Tri Sigma name justice; so, our reputation on campus has not been the best.
It won't get better if you keep dissing your own alumnae.
Definitely make COB events invite only - even without nutso PNM, letting anyone attend who wants to or hears about it makes your chapter look desperate.
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It is all 33girl's fault. ~DrPhil