NutBrnHair, who is a 28 year Chi Omega member, has given you the answer.
__________________ Kappa Alpha Theta "The Fraternity was always second in my mind to coeducation. It was organized to help the girls win out in their fight to stay in college on a man's campus. We had to make a place for women in a man's world, and the Fraternity was one means to that bigger end." -Bettie Locke Hamilton
Does anyone know if a Chi Omega legacy who actually attends a Chi Omega preference party should expect a bid?
From the sounds of the question it sounds like a "personal" (like it has happened to your or a family member) issue. With that in mind, I would advise what NutBrnHair said and call Chi Omega's HQ.
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"Courage is not the absence of fear, but the capacity to act despite our fears" John McCain
No one can make you feel inferior without your consent." Eleanor Roosevelt