TKESweethrt,
You might have mentioned this already, but do the other local sororities on your campus want to go national? While I can understand why some groups want to stay local, being affiliated with a national organization can have its benefits.
Do you have a Greek Advisor, or someone from Student Activities that works with the greeks on your campus? Do you know if they are interested in getting their local groups affiliated with inter/national organizations? (I am just wondering this because on my last campus all the sororities were locals, and the Greek advisor there invited national sororities to do presentation. Since then, two of the three local sororities have been affilated with inter/national groups and the interest in Greek life has definately increased on that campus dramatically from years past...and that is greek interest in both the inter/national fraternities that have been on that campus for *years* as well as the new inter/national sororities on campus!)
OK, I'll stop with the 1001 questions
