Julie, hi there. I am an "older" (lol--and trying to be wise here) sorority woman, first starting with an NPC organization in college and then being invited to become a Beta Sigma Phi after marriage and having a family.
I was saddened to read that you were going to drop from rush and I was also sad to hear that you were given the run around because of grades. Before reading all the posts in this thread, I was going to write and encourage you to at least hang in and give rush a try, even though you felt that maybe that chapter that extended you an invitation "wasn't for you".
I am glad that you are going to continue with rush. Believe me, things have changed (for the better it seems) when it comes to rush, or I should get with the times and say "recruitment". You sound very dedicated and committed to pledging yourself to the Greek System and that is certainly something that no matter which badge you wear is an attribute to GLO's everywhere.
Best wishes--I will be thinking of you!